Archive of Our Own

The first time Suho noticed it, Sieun had been focused on a textbook, a furrow between his brows and the cap of his pen between his pretty lips as he studied and took all of his notes.

Suho had been watching Yeon Sieun for as long as they’d shared a class, and after that first time, he'd lost count of how many times he’d seen the end of Sieun’s pencils or the caps of his pens in his mouth, tongue rolling the cap around, teeth marks steadily growing on the plastic as time stretched on.

After his coma, he'd been stupidly pleased to see that this part of Sieun hadn’t changed at all – he still chewed on pen caps, still rolled things between his teeth and tongue when his mind got too busy. It had been one beloved thing that had survived the time Suho had lost because of his coma.

Now, at twenty-one and only recently together, Suho was even more insane over the fact his pretty boyfriend could still self-soothe with something in his mouth.

There was just something both so insanely erotic and sweet whenever he saw Sieun chew or suck at something; sweet, because anything that made Sieun feel calmer and happier was always a win in Suho’s mind, and erotic because, well, he was a simple man and the sight of Sieun’s wet, pink tongue curling around whatever was in his mouth was enough to make his cock twitch every single time.

Especially since they’d started having sex, and Sieun could—and had—spend an hour straight just suckling on Suho’s cock, cheek pressed to Suho’s thigh and soft little hums vibrating around Suho’s cock as Suho scratched his fingers through Sieun’s hair, enjoying the heat of his boyfriend’s throat and the implicit trust that buzzed between them.

That was why, as he made his way into the kitchen of their shared apartment and saw Sieun roll the tip of a chopstick around between his teeth and tongue, Suho’s first thought was how pretty Sieun’s lips would look stretched around his cock before he melted, a soft coo falling from him helplessly.

“Hi, baby,” Suho called, shuffling up behind him and dropping a kiss to the top of his head. “You okay?”

Suho had amassed a list over the years of certain situations that's caused Sieun to self-soothe:

• when he was stressed

• whenever he was overtired

• when he was horny but shy about it

• when he was on the cusp of a panic attack and needed something to focus on before his breath caught

He always made sure that he took the time to figure out what the cause was before he allowed any of his more vulgar thoughts to hijack the moment.

“Suho-ya.” Sieun tipped his head back, resting his head on Suho’s abdomen and blinking up at him upside down, his eyes watery and nose flushed pink.

Suho immediately leaned down and peppered Sieun’s face with soft kisses, heart aching, desperate to soothe whatever had upset his boyfriend.

“Ya, Sieunie.” Suho nuzzled his nose into Sieun’s cheek before he moved, one hand cupping the back of Sieun’s head to gently tip him back upright as he crouched down in front of him instead. “What happened, huh? What's wrong?”

Sieun sniffled, teeth worrying at his plush bottom lip, and Suho valiantly ignored the way his gut burned with a flare of arousal at the sight of his pretty baby with teary eyes.

He shrugged, mouth dropping open slightly as Suho reached up and gently smoothed his thumb across Sieun’s bottom lip.

“My father called me today,” Sieun whispered slowly, turning in his chair and spreading his knees to make space for Suho between his legs which Suho happily shuffled into.

“Okay…” Suho coaxed carefully, thumb moving in slow arcs just below Sieun’s bottom lip now. “What did he do now, baby?”

“He forgot my birthday, which you already know. But he called me for the first time in two months just to remind me that his birthday is next week and he expects to see me on his birthday.” A lone tear trailed down Sieun’s cheek. “I don’t know, Hyung. I don’t understand why after all these years I’m still hurt.”

Suho let out a worried little hum, gently brushing the tear away from Sieun’s cheek as he whispered, “Oh, my love. He’s your father, of course you're hurt. I’m so sorry.”

Sieun cried softly, tipping forward out of his chair until he fell into Suho’s embrace, face tucked into Suho’s throat and legs winding around his hips.

“Not your fault,” Sieun whispered tearfully, nuzzling into Suho. “I’m just sad.”

Suho pressed his lips to Sieun’s cheek, then trailed a gentle path all across the side of his face, from his temple, over his cheek, the side of his nose and the curve of his jaw, aching with the desperate need to make him feel loved.

“It’s okay, baby, you can be sad.” Suho adjusted his grip as he stood, slowly walking them to the couch, wanting Sieun to be somewhere softer and warmer while he was upset.

It always broke his heart whenever Sieun cried because he was upset. Even though he would never take it for granted, and he would always make sure Sieun knew he could be vulnerable around Suho. After years of Sieun keeping everything bottled up and refusing to show hardly any emotion, it was a privilege for Suho to be the one he allowed to hold him when he cried.

“I have you,” Suho whispered, settling onto the couch. Sieun sank into his chest, one arm looping over his chest and shoulder, nose tucked into his collarbone, and both legs stretched out over Suho’s thighs. “I have you, baby.”

Sieun cried quietly, his breath hitching every few seconds while Suho stroked his palm up and down Sieun’s ribs and side, humming lowly under his breath.

He dropped a kiss to Sieun’s temple, smiling softly as Sieun nudged his head into him, silently asking for another which Suho happily gave.

“Want my fingers, baby?” Suho asked after a while once Sieun’s cries had quieted and his breathing had evened out more. “Hmm? Want Hyung’s fingers?”

Sieun kept his head on Suho’s shoulder but he tipped his chin up so he could blink his eyes at him, his lashes wet and clumped together, red at the edges.

He was beautiful.

His cheeks flushed slightly at Suho’s question, just like they always did, but Suho could see the anticipation flickering in his gaze as Suho brushed his thumb along his plush bottom lip once again.

Suho had been offering his fingers for Sieun to suckle on ever since they were seventeen and just best friends. Back then, it had been something he’d offered in a panic when Sieun had come back from an exam in a pure panic because he was positive he was going to fail.

And Yeon Sieun did not fail.

He had been crying so hard he had been heaving, and his mouth kept opening and closing and Suho had only ever seen him do that when he was chewing or sucking on something, and so he had held up two fingers and offered them up, just like he offered up every other part of himself for Sieun.

Sieun had been so sweetly hesitant that Suho had almost wanted to cry with him, but he had tentatively taken Suho’s fingers into his mouth and he’d settled quicker than Suho had ever seen.

Ever since then, whenever Sieun wanted it, Suho happily gave him his fingers to suck on.

Sieun’s mouth parted and he stared up at Suho silently. His Sieunie would never be much of a talker when he felt this vulnerable, but that would never be a problem.

Ahn Suho was a pro at reading Yeon Sieun.

Suho bit his lip to stop himself from cooing again, and carefully pushed two fingers past Sieun’s lips and pressed them against his tongue.

His cock twitched helplessly as the heat and wetness of Sieun’s mouth registered with his nervous system, and he couldn’t help but shift restlessly before settling again, a wave of calmness washing over him as Sieun all but melted into him.

His boyfriend hummed softly, tongue curling around his fingers and cheeks hollowing as he sucked Suho’s fingers in deeper.

“That’s it,” Suho rasped, voice rough. “Good boy.”

Sieun shivered, lashes fluttering.

Suho just smiled fondly and relaxed his wrist, his other arm tightening around Sieun as he shifted his ass down the couch cushion slightly, head tipping back to rest on the back of the couch.

The feeling of Sieun’s mouth on him always felt good—no matter where Sieun chose to put it—and when it was purely for Sieun's comfort, he always allowed himself to just relax and sometimes even nap lightly.

Sieun had once explained to him how it made him feel ‘floaty’, like he was both so deep in his own body and yet also separate from it. He was always a little more sweeter, a little more vulnerable, and a lot more relaxed when he was finished.

He wasn't sure how much time had passed while he drifted, he was only aware of Sieun’s saliva pooling around his fingers, his tongue flicking and curling over his knuckles, and the sweet sound of his happy little noises.

Sieun pulled away suddenly, a string of spit falling from his lips and dripping down Suho’s fingers in a perfect mimicry of how Suho made Sieun get his fingers ready before he fingered his hole open for Suho’s cock.

“Hyung,” he whispered, body shifting restlessly in Suho’s lap.

Suho lifted his head up and smiled, licking at his own fingers to clean up the mess his baby had left behind. “What is it, sweet boy?”

He knew straight away that Sieun was looking for more, he always was when he was deep in this particular headspace after sucking on Suho’s fingers and calling Suho so sweetly.

Sieun wriggled out of Suho’s grip, sliding over his legs and pushing against his thighs until he was on the floor, kneeling between Suho’s legs as he spread them to make room for Sieun.

His cock was soft, the arousal that flooded through him at Sieun’s initial finger-sucking had cooled after relaxing with his boyfriend for so long, but the sight of him kneeling between his legs, peering up at him all prettily with spit-slick lips was enough to have Suho rising to half-mast almost immediately.

“What is it, Sieunie?” Suho asked again, fingers curling through Sieun’s hair, smoothing and tugging gently.

Sieun leaned in and nuzzled into Suho’s thigh, making a soft, seeking noise.

Suho tutted playfully, thumb brushing the hot patch of blush spreading over Sieun’s cheek.

“Use your words, baby. Tell Hyung what you’re after,” Suho demanded. “You know I’ll give you what you want.”

Sieun began mouthing over Suho’s bulge, whimpering softly. “Hyung, can I have it? Please? I just want to hold you in my mouth.”

He exhaled shakily, his heart a riot against his ribs.

“Go on then,” he whispered, leaning back into the couch cushions again, watching Sieun as he began nuzzling at the opening of his work pants, teeth catching the zipper. “Take my cock out, baby.”

Sieun’s hands immediately flew up to Suho’s belt, fingers working expertly to undo his belt, the button of his pants, and then pinching his zipper and pulling it down.

He then reached his hand into the waistband of Suho’s underwear, the speed of his movements belying his desperation.

“Easy, sweetheart,” Suho laughed softly, reaching down and squeezing Sieun’s wrist to settle him. “I’m not going anywhere.”

Sieun just huffed, ignoring Suho as he carefully pulled the front of Suho’s underwear down until his cock sprang free. He immediately let go of his underwear and wrapped his hand around the base of Suho’s cock.

Suho watched through half-lidded eyes as Sieun shuffled even closer, his gaze focused wholly on Suho’s half-hard cock in his hand.

“Can I, Hyung?” Sieun suddenly asked, blinking up at him so prettily that Suho’s breath caught in his chest. “Can I have it?”

Suho answered first by rolling his hips up slightly until the tip of his cock brushed against Sieun’s bottom lip, smearing precum into the saliva that was still coating his lips.

“You can always have my cock, baby,” Suho rumbled. “Go on, take what you need.”

Sieun parted his lips and leaned in, suckling gently on Suho’s wet tip.

Suho braced himself. He knew that Sieun wasn't looking for anything more than to cockwarm him with his mouth, so he allowed his body to relax into the heat instead of thrust his cock down Sieun’s throat like he wanted to.

“That’s it,” he praised, moaning softly. His cock was starting to thicken, but they’d done this enough times that Suho could go fully hard and then soften without orgasming if Sieun didn’t push for anything more.

Sieun hummed happily, sinking further forward, taking Suho’s cock into his mouth slowly but surely until the head bumped into the back of his throat.

He gagged slightly, spit slicking down Suho’s shaft and making a wet patch appear on Suho’s underwear. Sieun held himself there for a moment longer before pulling up just enough that Suho’s cock was still deep in his mouth but not enough to choke him.

Suho pressed his legs in closer to Sieun, giving him something steady to lean against as he sank into cockwarming, eyes fluttering shut and hot cheek resting on Suho’s leg.

He wished suddenly that he’d taken his pants off first, the need to feel Sieun’s heat on his skin sudden and desperate.

“You’re so good, Sieunie,” Suho whispered reverently, cupping Sieun’s other cheek with his palm and stroking the blush there. “You’re so sweet. I love you. I love you so much.”

Sieun nodded slightly, one hand coming up to stroke along Suho’s forearm.

Suho didn’t always need to hear Sieun respond with his own confirmation of love; his eyes held it all, his body held it all, his trust held it all.

Suho knew how deeply Sieun loved him because Sieun showed him constantly.

He dropped his head back down to the back of the couch, eyes closing as he allowed himself to enjoy the heat of his baby’s mouth around his cock and the way he tightened around him every so often as he swallowed the drips of precum that Suho leaked against his tongue.

After a while of resting in silence with Sieun’s suckling as his only background noise, he lifted his head up slightly and peered at the clock. Ten minutes had passed since Sieun had first started cockwarming him, and his cock had softened once again to half-mast, and he’d likely be completely soft soon enough.

He looked down at his boyfriend, curious to see if he’d fallen asleep like he had done in the past, only to find Sieun watching him with heated eyes.

“Look at you,” Suho said, voice low and rough. “You’re so pretty, baby.”

Sieun’s eyes crinkled at the corners and Suho’s heart exploded with love and delight because he was so beyond weak for Sieun’s smiles and his happiness, and everything Sieun.

“You want more?” Suho asked him, his belly clenching with anticipation because of the look Sieun was giving him.

Sieun didn't hesitate; he began bobbing his head up and down, his hand moving with him to cover the part of Suho’s cock he couldn't fit in his mouth.

Suho’s head tipped back and he moaned low and long, his cock pulsing as blood rushed below.

“Fuck,” he groaned, fighting to keep his hips still. He wanted this to move at Sieun’s pace only. All of this was for Sieun’s comfort and pleasure most of all.

Sieun whimpered, popping off of Suho’s cock with an obscenely wet noise.

“Hyungie,” Sieun begged hoarsely. “I want you to fuck my throat.”

Suho couldn't help but smirk, his cock twitching and smearing wet, sticky precum and Sieun’s saliva across his jaw.

“Alright, baby,” he agreed easily, curling his fingers into Sieun’s hair. “You know what to do if it’s too much, yeah?”

Sieun nodded, tongue swiping at his lips which definitely looked swollen from how stretched they’d been around Suho’s cock. “Tap your leg twice.”

“Good boy.” Suho purred, relishing in the way he could feel how Sieun shivered with pleasure at the praise.

He allowed him another moment to breathe before he used his grip on his hair to pull him back down onto his cock.

He thrust up at the same time, burying himself deep in Sieun’s throat and holding him there as he gagged, watching raptly as tears streamed from the corners of his eyes before he tugged him back up until just the tip was resting against his tongue.

Sieun’s saliva was completely covering his cock now, and his eyes had fluttered shut and Suho knew his baby was enjoying himself because he’d gone completely lax, allowing Suho to manhandle him as much as he wanted.

He was already looking forward to coming down his throat and then getting some food and water into his baby before spooning him in bed; he was just so sweet. He was the sweetest, and Suho loved him so much.

He held Sieun’s head still and did all the work himself, fucking into Sieun’s mouth just enough to make him gag slightly so that he could coax more of his spit to run down his cock.

“Fuck,” he all but growled, cock jumping against Sieun’s tongue when Sieun’s fingers suddenly wrapped around his balls, fondling them expertly. “You’re so good, baby, fuck.”

Sieun hummed happily, eyes still closed, but mouth and tongue and fingers working Suho closer and closer to his climax.

Suho rolled his hips up, fucking his throat faster, faster, faster, his balls already tightening in Sieun’s grip as he chased after his release.

“Gonna come, baby,” he moaned, fingers tugging at Sieun’s hair before he loosened his grip and smoothed his palm over his head, allowing Sieun the freedom to move. “I’m gonna come, I’m gonna come.”

Sieun moaned sweetly, sucking more of Suho’s cock into his mouth instead of pulling away, which he always did whenever he wanted to swallow Suho’s come.

He panted harshly, eyes slamming shut as heat rolled through him in waves, his cock pulsing as his orgasm hit him almost violently.

Sieun swallowed diligently, throat working resolutely. He bobbed his head up and down slowly, fingers stroking soothingly over Suho’s balls and across the bottom of his shaft to work him through his climax.

“Fucking hell, Sieun,” Suho all but whimpered, watching blearily as his boyfriend carefully pulled up, tongue lapping furiously at the underside of his cock and his sensitive slit to clean up every drop of come.

Once he was satisfied, he let Suho’s cock fall from his lips with a soft pop.

“Thank you, Hyung,” Sieun whispered, voice wrecked from choking on Suho. “Love you.”

“I love you,” Suho hurriedly whispered, leaning down and gathering his baby into his arms and lifting him back up into his lap, his softening cock trapped between them. “You’re so good, baby, you’re so sweet.”

Sieun smiled slightly, lips curving just a little at the edges and he looked even softer now, relieved and settled in a way he hadn’t looked when Suho had first gotten home.

He rubbed his palm up and down Sieun’s back, nuzzling into his neck.

“Want me to get you off, too, baby?” Suho asked, torn between wanting to pleasure Sieun—which was one of Suho’s greatest joys in life—and getting some food into him.

Sieun shook his head, petting Suho's head slowly. “I’m okay, Suho-ya. I wouldn’t mind going to bed, though. I am tired.”

Suho pressed a kiss to Sieun’s throat, relishing the feel of his pulse thrumming against his lips. “Food first, baby, then bed, okay?”

“Okay.”

Suho lifted him to the side just enough to tuck himself back into his underwear before he stood up with Sieun in his arms again, his pants still unbuttoned and belt flopping uselessly at the side.

Sieun was completely lax in his arms, settled and relaxed and soothed. He was in the exact place he always aimed to help Sieun get to when he let Sieun use his fingers or cock to satiate his oral-fixation.

If this was the outcome, then Suho would happily let Sieun use him for the rest of their lives.