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Off limits

Summary:

What is he doing? This is his best friend’s brother - little Jungkookie, who Yoongi dotes on and protects from the world’s terrors.

And here Namjoon is, trying to fuck him.

(The best friend’s brother namkook au)

Notes:

Okay so this one has been in the works for a while…some of you may remember some wips I shared a while back IM SORRY ITS ONLY JUST SEEING THE LIGHT OF DAY AHHHHH

I’ll try and keep it just two chaps hehehe pls enjoy <3

Chapter Text

 


Namjoon manoeuvres his way past the crowd of people as he hops off the subway and strides down the stairs to the exit. It only takes him two minutes to realise he’s heading the wrong way this time. A new record.

Now that he’s heading in the right direction, Namjoon pulls his phone from his pocket to type a message.

 

> I’ll be there in 10 mins

> Want me to pick up anything on my way?

 

He shoves his phone away in his jacket pocket shortly after, hesitating before he opts to remove it in favour of his jean pocket. It’s deeper and his phone will be less likely to fall out while he makes the brisk walk to his friend’s place. He’s a man that learns from his mistakes.

A notification ping on the journey tells him that Yoongi wants some snacks, so Namjoon does his best to pick out a good selection from the local convenience store before he heads to the apartment building.

Yoongi answers the door in an oversized T-Shirt and sweatpants, feet bare as he shuffles aside to let Namjoon inside.

“This is the haul,” Namjoon says with a proud grin, holding up the plastic bag for his hyung to see. Yoongi takes it with a grateful nod.

Spending time at his hyung’s place is Namjoon’s unwinding time away from his corporate hell and other hobbies. Yoongi is the closest thing Namjoon has to a best friend – he’d probably say the same about Namjoon if he was the sappy type. He’s not.

Today is a computer game kind of day. The duo stuff their faces with savoury and sweet snacks in between shouting at the computer screen and energetically pressing buttons.

Namjoon rubs his hands on his jeans to rid them of sticky crumbs. “Want to drink some whisky?”

Yoongi shakes his head slowly, a contrast to his fingers rapidly jumping across the keyboard. “I have pilates at three o’clock. We can drink next time, though. If you want.”

Namjoon loosely shrugs. “Just curious about Min Yoongi’s whisky pick of the month.”

Yoongi snorts a laugh, though he keeps his eyes trained on his animated character. “Oh, yeah. This month’s is a good one.”

“Next time then,” Namjoon agrees with a nod.

The two of them are lost in the gaming world for a couple of hours before the doorbell chiming disrupts them.

Namjoon’s eyebrows raise. “You expecting a package?”

Yoongi grips his chin in thought before he scoffs under his breath. “I bet that’s just my brother.”

“It’s Jungkook? Why doesn’t he just let himself in?”

Yoongi nods as he gets up and stretches. “I updated the pin recently so he probably just forgot it again.”

“Ah, I do that a lot…” Namjoon hums thoughtfully as he rolls his head back and forth, stretching his neck. “How long has he been living here now?”

“It’s already been two months,” Yoongi lets out a huff. “Can’t believe he’ll be leaving in another few to go back to Busan.”

Namjoon hums in acknowledgment. “Will you miss him much when he goes?”

Yoongi lightly shrugs, “I like being able to keep an eye on him, I’ll admit. I feel responsible for him, in a way.”

Yoongi shuffles over to the front door as Namjoon watches his retreating figure. Low and behold, it’s Jungkook who appears at the door with a sheepish grin.

“I really thought I memorised it…” he murmurs as he shrugs off his padded jacket and steps inside.

Yoongi scrutinises Jungkook’s appearance with sharp eyes. “Have you been eating enough? You’ve lost weight.”

“Trying to get my body fat percentage down, hyung. That’s all.”

“I’m cooking doenjang jjigae tonight,” Yoongi states, taking Jungkook’s coat from him to hang on the coat rack as he kicks off his shoes. “How’s everything going at university? Studying hard?”

“Yeah, hyung. I told you, it’s all fine,” Jungkook lightly rolls his eyes in that ‘stop being an overbearing hyung’ kind of way.

When Jungkook strolls into the living room, Namjoon gives him a quick nod of acknowledgement. He moves his attention back to the PC screen.

“Hope you’re staying out of trouble,” Yoongi grumbles as he lightly shoves his brother. “No funny business, hm?”

“Hyung, I’m always on my best behaviour!” Jungkook insists with a whine.

Namjoon pauses the computer game and picks up his phone. It’s 2:44pm.

“Oh, hyung,” Namjoon lifts his head and holds up his mobile phone. The time flashes on screen. “Don’t you have pilates soon?”

“Oh, shit—” Yoongi comically races off to his room. A minute later, he comes out again with a gym bag and a yoga mat over his shoulder. “Can't believe I forgot!”

He haphazardly pulls on his shoes, only regarding Namjoon briefly. “Sorry–I’ll catch you later, yeah?”

Namjoon nods, giving his friend a closed mouth smile before he disappears into the hallway.

He meets Jungkook’s gaze as the front door slams shut behind his friend.

 

 

Twenty minutes after Yoongi leaves, Namjoon has Jungkook bent over the sofa.

“Hyu-ung!” Jungkook cries out, hands grappling for purchase as Namjoon slams into him, hips snapping forcefully.

“Fuck, fuck…” Namjoon grunts, grip on Jungkook’s hips tight as he gives it to him, balls heavy as they slap against Jungkook’s ass. “So good, baby…you’re s’good…”

Namjoon moans as Jungkook clenches around him, the telltale sign that he’s close. Namjoon presses himself against his back, kisses his neck as he rocks into him.

“You’re gonna milk me dry…shit…”

Jungkook rocks back against his cock with enough force to have Namjoon seeing stars, and he moans loudly as Namjoon comes inside, cock pulsing and legs trembling.

Namjoon pulls out with a hiss, watching as Jungkook flops face-first onto the sofa, back glistening with sweat. His eyes drift over Jungkook’s pretty waist and ass. It’s like he’s being pulled over, hands unable to resist as they drift along the clammy skin.

Jungkook rests on his elbows, neck craning to look up at his hyung with wide eyes. “Round two?”

Namjoon huffs a laugh in disbelief, shaking his head as he gives Jungkook’s ass a firm slap. “Just like that? Do you ever get tired?”

Jungkook grins sheepishly. “Yeah, but like…I can go again.”

Namjoon digs his tongue into his cheek, takes his heavy, softening cock into his hands.

“You know…hyung usually stops by a cafe before coming home,” Jungkook attempts to persuade Namjoon, gazing up at him with his pretty doe eyes. “He likes to critique the architecture with strangers walking by so…we probably have another couple of hours…”

Yoongi hyung. Namjoon’s stomach grows heavy suddenly, twists and twirls with that familiar feeling. Guilt.

It was never supposed to be like this.

Namjoon is a terrible, terrible friend.

 

 

/////

 

 

Two months earlier…

 

 

“Oh, the whore has returned!”

What a greeting. Namjoon shakes his head silently as he toes off his shoes and enters the living room. Taehyung grins up at him, his Nintendo Switch 2 in his palms as he lays back on the couch. His smile grows mischievous, an eyebrow arching.

“And he’s alone.”

“He is?!” Jimin pokes his head out from the kitchen into the living room. His speciality is being in two rooms at once.

Namjoon rolls his eyes in annoyance, crossing his arms over his chest defensively. “So what?”

“It’s just interesting.” Taehyung places his game console on his lap and sits up on his elbows.

Jimin, now fully in the living room, pokes Namjoon’s cheek with a hum. “Very interesting.”

“Do you find everything I do interesting? Are you bored of your own lives already?”

“We just expected you to bring another boy toy home with you,” Taehyung tells him matter-of-factly.

Namjoon’s shoulders hunch defensively. “What do you mean? I hardly ever bring anyone over!”

Jimin and Taehyung share a look, and Namjoon hates that they’re right. He does bring a lot of guys over for sex.

Fine, he’ll own it.

Namjoon shrugs now as he lets the lines on his forehead relax. “Well if you’re really gagging to know…I stayed overnight at a guy’s place. Just got back.”

“Oh, so this was you doing the walk of shame!” Taehyung flops back on the couch, clapping his hands together in glee. “Knew it!”

“You guys are just salty you never get any action and you’re forced to jerk each other off because of it,” Namjoon insists with a smirk, flicking Jimin on the forehead before he pushes past him.

“Hey! Just where do you think you’re going?” Jimin protests, hands on his hips.

“Showering. I’m going out again tonight,” Namjoon responds on his way, turning to give him a wink. “Don’t wait up.”

Jimin huffs, shaking his head as Taehyung picks his Nintendo Switch up again.

“Such a whore,” they both utter simultaneously.

 

 

/////

 

 

Is Namjoon a whore? No.

Well…

It’s entirely possible.

Maybe he does cycle through guys like turning pages in a book — flicking past the boring parts and always onto the next, the next, the next. Hookups are his thing and he can’t deny that; he likes that stimulating, passionate connection you can only make pressed against hot stranger’s bodies at a sweaty gay club.

So, yeah, it’s entirely possible he’s a bit of a whore. But who cares? He’s not harming anyone, it’s all consensual and he regularly gets checked up. If anything, he’s a very good whore and Taehyung and Jimin should mind their business.

After partying too hard the previous night, Namjoon’s head is throbbing and protesting. At least he got a lot of phone numbers, and he knows for a fact that at least a couple of the people he got them from were just his type — his type being pretty guys that work out. There’s something about the combination of pretty with muscles that really gets Namjoon going.

Now he just has to remember which phone numbers match with which face, like some kind of confused puzzle game.

It’s quite warm for October. Namjoon sighs as the mild breeze brushes past his cheeks. He presses his feet harder on the pedals of his bike and increases his pace, despite his head telling him to drink five buckets of water and to lie down. Ramyun is calling him, and that’s a call that never goes unanswered.

He stops when he reaches the closest convenience store and promptly gets himself set up with some spicy Buldak. Namjoon’s arms are sore from his…activities last night, and he winces as he raises his arm to slurp his ramyun.

It’s when he’s scrolling through his phone that he gets a call from his best friend, and this guy has to be the only one in his circle who doesn’t know how much of a whore he really is. Thankfully, they don’t have the kind of relationship where they’d share stuff like that.

He answers quickly and places the phone to his ear.

“Hey, ‘sup?”

“Namjoon-ah,” Yoongi begins with a heavy sigh. “Are you busy? Any chance you could come over?”

Namjoon tilts his head to the ceiling, his schedule rushing past his mind. “Just having lunch, might go to the gym later but I'm not particularly busy today. Why, what’s up?”

“I need your brain.”

Namjoon huffs a laugh, though his chest swells with pride. “You’re writing songs again?”

“Yeah. The extra money is good but…they always come out better with your lyrics,” Yoongi’s tone is light and genuine. Namjoon beams.

“I can make it over by around 4 o’clock. Does that work?”

“You sure?”

“With the beats you pull out? I’m positive.”

“You’re the best.”

 

 

“This is such a sick track,” Namjoon groans in delight as he plops down onto his hyung’s bed.

Yoongi’s mouth quirks at the corner at the compliment. He picks up a notepad from his desk and tosses it at his friend.

“Get that writer brain working, then. Make it good.”

Namjoon grabs the pencil balancing in the binding loop and starts scribbling every word, every sentence that comes to mind when hearing this cool beat.

“Hyung, the words are just fucking coming out of me,” Namjoon laughs in disbelief, his weight shifting as he eagerly scribbles down his notes. “It might be shit, but…”

“I’ll be the judge of that,” Yoongi sniggers. The sound of his friend’s phone pinging cuts through the melodic beat, and Namjoon glances up quickly as Yoongi checks the device. “Ah, he’s here.”

“Who?”

“My brother.”

“Brother…” Namjoon murmurs, focused on the inner musings of his mind as he etches the pencil on the page.

“Yeah, you know, Jungkook?” Namjoon nods along, faintly recalling Yoongi’s stories about his little baby brother who lives in Busan. “He’s staying for a few months to study in Seoul, can’t remember if I mentioned. I’ll introduce you but he should leave us alone.”

“As long as he’s not annoying,” Namjoon chuckles lightly. “How old is he again? Eighteen?”

Yoongi snorts as he gets up and stretches, “he’s twenty three.”

“Oh, shit,” Namjoon barks a laugh as he flicks over a page in the notebook. “The way you talk about him makes him seem much younger.”

“He feels young to me,” Yoongi sighs wistfully as he pads out of his bedroom. “I’ll be back in a sec, I’ll collect him from outside.”

Yoongi wanted this song to cuss out the government but Namjoon begs to differ. This beat is made to be a love song. There’s just something in him that aches to sprawl down words of romance.

‘Before knowing you, my heart was filled with straight lines only…’

A few moments later, Yoongi can be heard hauling a suitcase through the apartment door. He hears the murmur of a voice he doesn’t recognise.

“My friend is here,” Yoongi says in the distance. “Namjoon-ah.”

Namjoon looks up at the sound of his name, and that’s when his eyes land on the stranger standing just across from Yoongi’s bedroom door.

He comically double takes.

Suddenly, everything is in slow motion. Namjoon’s pupils dilate as he takes in the man’s doll-like face and bambi eyes, his head spinning as they dart to his beefy, tattoo-filled arm and pierced earlobes. Is that a piece of drama OST playing in the background? Where did that soft vignette come from?!

“Namjoon-ah? This is my brother, Jungkook. Jungkook, this is my friend, Kim Namjoon.”

Namjoon clamps his mouth shut, a hot embarrassed flush washing over him as he briefly averts his gaze. He just about manages a small wave at Yoongi’s brother before moving his gaze back to the page of his notebook.

“I’ve set up the guest room for you,” he hears Yoongi say. “Get yourself comfortable. We can order something to eat in a bit, if you want.”

With that, Jungkook scuttles off.

“Alright…where were we?” Yoongi utters as he rubs his hands together. He plops back down in his desk chair and reaches for his laptop. Namjoon is frozen in place.

That magnificent being is Yoongi’s brother?!

Namjoon can’t concentrate on anything anymore. He can’t focus on the words in his page, on the sound of Yoongi’s mixing.

He’s only half paying attention to his friend’s musings, too caught up with the horny Cupid’s arrow lodged in his heart.

Ten minutes later, Jungkook passes by the door again to head to the kitchen. Namjoon makes up an excuse about having a dry throat so he can follow him. He’s an opportunist, what can he say?

“Hey. Nice to meet you,” Namjoon says as he enters. Jungkook’s eyes widen slightly in surprise before a shy smile takes over his features. Fuck, he’s so cute.

“Nice to meet you too, um…” he bites his pretty bottom lip. Namjoon has the sudden desire to bite it for him.

“Kim Namjoon but…you can call me ‘hyung.’” Namjoon closes in on Jungkook, but only so he can squeeze by and grab a glass from the cupboard. Flirting already? He can’t help himself around such a pretty guy.

Namjoon lingers in Jungkook’s personal space with the empty glass in hand. “Do you…need a glass?”

Jungkook slowly shakes his head as he looks up at Namjoon coyly through his lashes. Is he picking up what he’s putting down? Jungkook’s eyes twinkle with a certain mischief that has Namjoon’s stomach tingling.

Just as he opens his mouth to speak, the sound of Yoongi approaching forces Namjoon away.

“Gonna make a coffee,” Yoongi announces as he enters. “Namjoon-ah, coffee?”

Namjoon nods rigidly, eyes darting between Jungkook and Yoongi.

Shit, what is he doing? This is his best friend’s brother - little Jungkookie, who Yoongi dotes on and protects from the world’s terrors.

And here Namjoon is, trying to fuck him.

 

 

/////

 

 

Another gruelling day at the office. Namjoon works in marketing and it’s a real drag — but something has to pay for his lifestyle. It’s not cheap to live in Seoul and he spends far too much money on takeaway food since he can’t really cook for himself.

Now that he’s finally home after surviving the commute, Namjoon throws off his blazer and retreats to the comfort of his bedroom.

Something is very, very wrong. And he’s not talking about Jimin’s and Taehyung’s moans that he can hear coming from the room next door.

He bangs on the wall and that seems to quieten it somewhat.

Worse than the sound of his friends fornicating, Namjoon hasn’t been able to get Jungkook out of his fucking mind.

This is bad. How has he gotten such a big crush so fast? Namjoon takes a seat at the end of his bed and exasperatedly runs his fingers through his hair.

In times like this, usually he’d fuck it out. He can’t do that.

He can’t fuck Jungkook.

Namjoon drags his fingers down his face with a groan as he slumps onto his back. This sucks so bad!

Maybe he’s being dramatic, but he’s used to getting what he wants.

It doesn’t take him long at the club; one dimpled smile and a wink and he’s usually got them, hook line and sinker. He knows he could get Jungkook too. It’d be easy to make that pretty boy his.

Namjoon groans as he rapidly shakes his head, hoping to rid himself of these awful thoughts.

It would be so easy, but what’s the point in even entertaining the thought of it? He’s Yoongi’s brother, which makes him automatically off-limits.

Why does that make him so much more tempting, though? A forbidden fuck, of all things! What is Namjoon supposed to do?!

“He’s really sensitive to smells,” Yoongi’s voice drifts through Namjoon’s mind. “There’s only one type of fabric softener he can use. It’s the kind that’s made specifically for babies.”

He bites into his fist. Jungkook is adorable, and Namjoon is a terrible, terrible person for thinking these things about Yoongi’s sweet, innocent, gorgeous baby brother.

He’s got the face of an angel, and the body of a—

Namjoon cups his groin over his trousers. Jungkook is so damn hot. Exactly Namjoon’s type, down to the last detail. Pretty face, tiny waist, muscled enough to make his head spin…

He hisses a breath as he grabs his phone and opens Instagram.

This isn’t the first time he’s lurked on Jungkook’s profile and it will definitely not be the last. He doesn’t have many photos, but the ones he does have the desired effect. Namjoon wets his lips, eyes darting to Jungkook’s mirror-selfie profile picture. He clicks the ‘follow’ button before he changes his mind.

Would it really be so bad?

Maybe their first encounter just got him hot and heavy. He hasn’t hooked up with anyone in a few days, maybe it’s just his pent up horniness that’s making him crazy.

Wetting his lips, Namjoon opens his message app.

 

Me

> hyung u home?

> thought I’d swing by

 

He fidgets as he awaits a response. If Namjoon remembers correctly, Yoongi is working overtime today. He’s an insurance broker by day and a songwriter on the side just to make his main job bearable.

Thankfully, his response is punctual.

 

Yoongi

> I won’t be back until late today, I’m working overtime.

> Sorry. Maybe this weekend?

 

Yoongi is typing another message, but Namjoon is already lacing up his shoes.

 

 

/////

 

 

There’s no way Jungkook can be as pretty as Namjoon remembers. He’s just romanticising the situation.

He needs this for closure. After he confirms that it’s all in his head (and his dick) he can go on living like a normal person. One who doesn’t want to fuck the living daylights out of his friend’s younger brother.

A moment after Namjoon’s internal pep talk, Jungkook answers the door.

Namjoon double takes again. He’s wearing saliva-inducing skinny jeans and a tight, low cut shirt.

Oh no.

Oh no.

God, no!

He’s drop dead beautiful, even more delectable than Namjoon remembers. So much prettier in person; gorgeously muscled with shiny eyes and a mischievous smile. Namjoon wants to eat him up.

“Hey, hyung,” Jungkook flashes his adorable bunny teeth with his grin. “Sorry, hyung is out but I can tell him you stopped by.”

Namjoon wets his lips, dragging his eyes away from Jungkook’s figure as he nods slowly. “Okay, cool…um…you on your way out?”

Jungkook nods. “Soonish. I have an hour to kill before I meet my friends.”

An hour to kill, huh?

“Want to hang out?” Namjoon asks hopefully. Maybe a little too eager. “I was bored out of my mind at home which is why I stopped by.”

Jungkook's lips part in surprise, but he nods energetically as he lets Namjoon inside.

Namjoon is far too good at this.

“I was just watching a YouTube gameshow. Want to watch? We can try and guess the answers!” Jungkook suggests as he leads his brother’s best friend into the living room.

“Sure, sounds fun.” Namjoon agrees with a nod. Honestly, he’d be willing to do anything Jungkook wants to keep him smiling prettily like that.

Namjoon gazes at Jungkook as he scrolls through his YouTube to set up the episode, ensuring he’s sitting extra close to him on the couch. It’s definitely not normal or acceptable the way his heart is racing.

Naturally, Namjoon feigns like he sucks at this quiz game, and he lets Jungkook beat him even when he knows the answer. Namjoon pretends he’s annoyed because he loves hearing the fits of giggles that flow from Jungkook’s mouth.

This is how things start and Namjoon eases into it; he knows exactly what to do.

He digs his fingers into Jungkook’s side when he gets the answer before him and playfully shoves him when he gloats at his success. He is very much aware that Jungkook’s hand never seems to want to leave his thigh.

The episode finally ends and there’s a pause. Namjoon’s heart booms in his chest. If it’s going to happen, it’ll happen right now.

Their gazes meet and Namjoon is overjoyed at seeing his own want reflected back at him in those round eyes. Jungkook wets his lips and squeezes Namjoon’s thigh.

Well, there’s no going back now. It was really nice knowing Yoongi. Great guy.

Namjoon doesn’t wait another second before he grips Jungkook’s chin and kisses him firmly on the lips.

Gentle and slow. Jungkook’s sweet lips have his tummy tingling, a fluttery feeling he hasn’t felt in a while. There’s something else buried beneath that rises to the surface when he feels Jungkook’s wet tongue teasing at his lips.

Something about this is strange; there’s something niggling at his head that he’s not used to and he can’t seem to switch it off. Is it his conscience calling out to him?

Namjoon stiffens as Jungkook attempts to deepen the kiss, grunting softly when Jungkook parts from him. Pretty doe eyes look up at him.

Yoongi’s brother stands up, and Namjoon reaches his hand out in a panic. Fuck. Why did he hesitate? What’s there to be unsure about? Jungkook is so fucking hot and now he’s gone and ruined it!

Jungkook smiles sweetly before he pulls his shirt off over his head. Namjoon’s jaw reaches the floor.

“Fuck…” he curses under his breath, his head spinning as Jungkook straddles his lap and kisses him for all he’s worth.

Yeah, it doesn’t feel strange anymore. Maybe he has no conscience after all.

Thank god.

“You’re so pretty, Jungkook,” Namjoon growls against his lips, hands snaking up his torso as he arches his back. “Gorgeous.”

Really, how can he resist? He’s no saint, no martyr. He’s just a human — and a very weak one at that.

Namjoon hesitates again, but this time for a different reason. This is Jeon Jungkook - angel baby Jeon Jungkook. The stories Yoongi tells of him are pure and innocent, laced with endearing silliness and eyes that shine like stars. Namjoon needs to be cautious.

“Have you…” Namjoon trails off with a sigh. How can he put this delicately?

“Have I…? What?” Jungkook questions with a giggle. God, why is he so fucking cute?

“Done…this?” Namjoon vaguely gestures between them.

Jungkook’s expression twists. He chuckles, his eyebrows downturning in amusement, “I’m not a virgin, hyung.”

“Oh—it’s just…the way your brother talks—”

“Quit talking about my brother,” Jungkook growls, almost giving Namjoon whiplash with how fast he pushes him down on the couch. “Talk about how pretty I am again.”

“Uh-huh, okay, pretty…” Namjoon babbles, head spinning as Jungkook grips his hair and tugs him into a deep kiss.

Jungkook grinds deliciously against him and Namjoon hisses through his teeth. And then he’s looking down at him with that mischievous smile, the same one that had Namjoon horny and intrigued when they first met.

Namjoon grips his hips as he’s pulled into another dizzying kiss. Each press of lips is more addictive than the last and he can’t get enough, wants more, wants to pound Jungkook so hard until he doesn’t even know his own name–

“Y’know hyung…” Jungkook purrs as he drags his wet lips up Namjoon’s neck. Oh, they’re talking now, are they? Why? “He doesn’t have to know…” Jungkook nips and bites him there on his sensitive flesh like a sexy vampire.

Namjoon shudders with pleasure; he’s so out of it he’s not even sure who Jungkook is referring to for a moment. And then it tumbles down on him like a tonne of bricks.

Right. Yoongi.

Well, he’s already gone this far…

Namjoon hoists Jungkook into his arms (with a lot of effort - the muscles aren’t just for show) and makes a beeline for the bedroom.

“Wait—that’s hyung’s room!” Jungkook quickly corrects him, slightly panicked as Namjoon stops in his tracks.

“Oh, uh, right…that could’ve been really bad…” Namjoon laughs awkwardly. “Which way is yours?”

 

 

It should be no surprise that Jungkook never goes to meet his friends.

Jungkook is far from the image of a blushing virgin that he’s probably led his brother to believe. He knows what to do with his hands, grip firm as he tugs Namjoon’s cock with delicious strokes. He straddles Namjoon’s lap on the bed to be stretched, and the image of Jungkook above him, moaning and panting, thighs spreading wider as Namjoon presses deeper, serves to make him feel even more delusional.

“J-Jungkook—” Namjoon gasps out as Jungkook suddenly positions his cock at his entrance, eager as he starts to lower himself onto him. Namjoon hisses at the sudden tightness, fingers digging into Jungkook’s hips. He expected something much slower to start out, but he’s far from complaining about this.

All of his guilt about his friend vanishes as Jungkook sinks down onto his cock, his tight heat clinging to him as Jungkook moans.

He feels unbelievable. Namjoon can’t help but throw his head back. “Fuck, fuck…”

“Feels big, hyung,” Jungkook lets out a breathy laugh, his thighs stuttering as he begins a rapid rhythm. “You’re stretching me wide.”

Namjoon groans at the thought of it, lifts his head so he can watch the way Jungkook’s hole swallows him up. That small puckered hole is stretched around his girth, slick with lube, an easy slide as Jungkook picks up the pace.

“Ah—feels good…” Jungkook whines, hips working extra hard as he grinds down on Namjoon’s cock. “Feels so, so good, hyung…”

Jungkook is an angel above him. Such a pretty face joined to a muscular body. Namjoon feels dizzy.

Jungkook bites his pink bottom lip, eyes squeezing shut as he gives it to himself particularly hard. Shit, that feels good. Namjoon wants to kiss him suddenly.

“Baby, come here,” Namjoon commands, tugging Jungkook’s body on top of him. Their lips lock messily and eagerly; Namjoon wouldn’t have it any other way.

In the far off, distant land of reality, Yoongi returns home. The sound of the door being unlocked and opened freezes Namjoon in his tracks.

There’s no way he can get caught - not when he’s come this far!

Namjoon takes control of the situation, flips them over and pins Jungkook beneath him.

“What—”

Namjoon clamps a hand over his mouth. “Shh…” he whispers, craning his head to follow the sound coming from the living room. “Your brother is home...”

Namjoon’s heart hammers in his chest. What the fuck is he doing? If Yoongi catches Namjoon balls deep in his little brother, their friendship is as good as over!

Ah—” Tight, tight, tight. Jungkook clenches around him. It feels too good; Namjoon’s hips kick forward on their own.

Namjoon teasingly glares at Jungkook. “You’re doing that on purpose,” He punctuates the final word with another thrust, cock twitching at Jungkook’s muffled moan.

“You like it?” Namjoon teases, words dripping with honey as Jungkook nods his head rapidly. “Want more?” More nods and muffled affirmations.

Namjoon pauses. He regards Jungkook’s closed door and listens out for his friend again. Is that the sound of the TV? Maybe he can get away with this.

“Okay, baby,” Namjoon purrs. “Gotta keep quiet, okay? Be good for me.”

Jungkook nods, and Namjoon slowly removes his palm.

The first few thrusts are slow and experimental. Jungkook looks up at Namjoon with parted lips, quiet whines leaving him as the pleasure builds. The faster Namjoon thrusts, the louder Jungkook’s moans become.

He’s forced to cover Jungkook’s mouth again as he jackhammers into him, finishing off with a bruising kiss.

It’s only after Namjoon comes down from the high of his orgasm, with Jungkook panting beside him, that he realises the true weight of what he’s done.

He’s betrayed his best friend.

Namjoon rubs his face with a heavy sigh as Jungkook tiptoes to the ensuite bathroom to clean up. It’ll be okay, Namjoon tells himself, it was a one time thing.

The click of the apartment door alerts him to Yoongi leaving, and Namjoon deflates in relief. He got lucky — it must be a sign.

Namjoon promises to behave from now on. He shouldn’t push his luck.