Chapter Text
There was pure, carnal lust in Clark as he looked down at the figure under him, hips meeting ass in a resounding slap slap slap of skin, heart pumping as he could barely contain the deep, guttural groan in his throat. Bruce was the literal definition of perfection; those glassy, glazed over blue eyes, the sweat slicked skin, the enticing pink of his cheeks, and the pheromones that he gave off, making him smell so damned sweet, yet also with a hint of a darker scent, something much more rich underlying that sweetness. Everything about him sent Clark's alpha senses into overdrive, making him want to mark Bruce up in both his come, scent, and claiming bites.
They weren't mates, nowhere near that point in whatever this was that they were doing, but Clark knew that, in the heat of the moment, Clark could ever so easily just bite and mark and claim the omega as his, once and for all. But he wanted this to be consensual, all of it, especially the claiming portion, if Bruce ever allowed it. It wasn't often that the alpha was invited into the rich playboy's bed, but when he was, he knew better than to push his luck.
"How are you so damn tight?" Clark panted out, voice thick with desire. He gazed down at the gorgeous man, hands tightening on his hips, gripping him harshly as he shifted them a bit, pushing Bruce's legs up, practically bending the man in half as he fucked him, biting his lower lip and holding himself back from leaning down to suck marks into Bruce's skin.
There had always been rules between them, for whenever they had sex. Clark wasn't sure, but he was about seventy-five percent positive that Bruce at the very least had an idea of what the alpha felt for him. Maybe that was the reason for all the rules, to keep him from making a mistake and accidentally tying them together in a bond that Bruce obviously didn't want.
The alpha sometimes couldn't tell if man was just cruel by letting them have sex but with no strings attached, or if the omega was just completely oblivious to the fact that Clark was irrevocably and painfully head-over-heels in love with him.
Clark swiveled his hips just so, making sure to hit the rich man's prostate, grazing up against it with his cock just so that there was enough pressure to be teasing, but not enough to really bring Bruce on the road to orgasm.
He tried not to think about it too often. He knew that if he did, he'd end up with an aching chest and half a mind to confront Bruce about the whole thing. Doing that, though, was bound to end in heart break, and definitely not on the omega's side. Clark wasn't willing to risk this, no matter how little it was to having the full package of Bruce Wayne, not yet. He couldn't fuck this up. He just needed to follow the rules, and then perhaps he'd be invited to join Bruce in his bed more often, maybe allowed to help the omega with his heats. And then, perhaps, something more suitable of an arrangement.
Sure, they were partners in heroism on a platonic basis, sometimes a sexual basis, but Clark wanted more. He wanted to be partners in the most intimate way. He just had to take his time, burrow his way in, maybe impress Bruce into considering him as more than just a fling every so often, maybe influence him into a possible mate, and then.... A real mate, a true partner in every way.
"Fuck!! Clark," Bruce hissed, voice deep and gravelly, almost akin to his 'I'm Batman' voice, but not deep enough, and definitely not as dark or angry.
His voice shocked the alpha from this thoughts, and - okay, he definitely found the cursing way too damn hot for his own good - his cock throbbed with all the blood rushing south, almost feeling as if he could knot this second, although if he did that, he'd end up with a pissed off omega on his hands. An overly horny omega, but pissed off nonetheless.
So, he slowed down to a pace that was probably painful for the omega, one hand moving from his hip to his cock, stroking over the heated member, thumb digging into the tip, before moving lower and gripping the base tightly. He picked up the pace then, leaning over Bruce a bit, making sure that he was still bent in half, knowing that the omega liked it rough, especially when he was this wet.
Clark knew that, if he was going to knot Bruce, he'd need to pull out and turn him over, to make it more comfortable for the omega while they waited it out. He didn't want to do it yet, wanting to savor the gorgeousness that was Bruce Wayne in the throes of passion. He leaned over him more, spreading his legs a bit wider to accommodate him, and pressed their lips together in a harsh kiss, swallowing down another few curse words that were threatening to escape the man's mouth.
He had the ultimate urge to spill dozens of compliments about how pretty Bruce was, how good and wet he was, how beautiful his noises sounded, how much Clark wanted to make him his, but doing so would ultimately make the playboy clamp up, would make his eyes go hard, and would make him hear the words 'Clark, none of that shit'.
The first time they'd hooked up had been an accident. It had been after a fairly difficult battle with some super villain (he couldn't exactly remember the name of off the top of his head at the moment), and they'd both been fairly high on adrenaline, and, in Clark's case, alpha pheromones and testosterone. Bruce was out as an omega, which made him all the more respected by the other League members. When they'd finally gotten alone, Clark had been unable to clamp down on the love and lust that he felt for the man. The omega had likely smelt the abundance of pheromones coming off of Clark, and while the alpha knew he could have knotted his hand just as easily, an offer at sex had his inner alpha singing. Before he knew it, both of them were naked and fucking, words of passion escaping his lips. Afterwards, he'd been informed that he couldn't say things like that, that they were to be saved for a special beta or omega in his life, not for Bruce.
It had been a few more flings after that when the rules had been placed and Clark had no other choice but to agree, unless he wanted to lose any and all access to even one night with Bruce. It hurt, of course, holding back like this and not being able to have his feelings returned without fear of rejection and heartbreak, but he knew that it was more bearable than nothing (well, not really, but he had to convince himself of that, or else he'd get broken up over the fact).
Time seemed to slow down as he felt Bruce bite his bottom lip, and he willingly opened his mouth up to the slight display of dominance, gladly giving it over for a taste of Bruce. It soothed him for a moment, and he pulled back, only to find the man's eyes blown wide with lust. He'd kept up the speed, he'd kept up the stroking of Bruce's dick, and he'd made sure to pay special attention to his prostate, and by that look, Clark could tell he was going to come soon.
And when Bruce came, Clark was never far behind.
A deep groan escaped the superhero's lips, and was soon followed by a quick, "Shit, I'm not gonna last much longer." Clark kept Bruce bent over as he continued to pound into him, before swiftly moving and pulling out, before proceeding to flip the omega over. Bruce easily went along with it, back arching as his ass raised, ready to be entered again, and without much ado, Clark did. His hands gripped the already slightly bruised hips again, and he went back to fucking deeply into him, enjoying the new angle, feeling as if he were going even deeper inside of him.
His hand wrapped back around Bruce's hard cock, stroking him madly, making sure to time his thrusts with his strokes, keeping the pace as he fucked in and out of his- no, the omega, chest pressed over Bruce's back as he kept going.
"Come for me, Bruce," Clark murmured into his ear, before moving his face away and straightening himself up, looking down to watch as his cock spread Bruce's hole wide, watching as slick seemed to be dripping back along his cock as he pulled out and fucked right back in.
It was when he felt a tightening around his dick and the resounding moan that resonated throughout the room that he knew the omega was coming, and he sped up his pace, wanting to come not long after him. Clark felt the warmth and wetness of his orgasm on his hand, continuing to stroke so that he could milk the come from the man's dick.
He continued to fuck this beautiful, gorgeous, perfect man, until he heard the words that made his heart almost stop from giddiness. "Goddammit, please, give me your knot, alpha," Bruce whined, voice both deep and warm and so full of lust that it made Clark feel weak in the knees. "Plug me up full of your come, plug me up so much that I can fucking feel it even days after."
Clark had no idea if that was Bruce or the horny omega talking, but he wasn't going to complain, and he most certainly wasn't going to deny his mate- no, shit, the omega anything. Without much more goading needed, the alpha thrusted once, twice, three times before pressing his dick so damn deep inside the man, feeling his knot swelling and plugging up Bruce before he began to come, filling him up so nice and good.
"Ah, Bruce, my lo-," he began, alpha hormones clouding his judgement, before he realized what he was about to say and stopped himself. He was panting, sweaty, and without too much effort, he had them lying on their sides, Clark spooning Bruce from behind, grinding his knot into Bruce, feeling the omega shudder and hearing him moan. He wanted to compliment, he wanted to say how good Bruce had been for him, but he kept his mouth shut, feeling the man shift around, probably making himself more comfortable to wait out Clark's knot.
"Mm... I really don't see why we don't do this more often, Clark, you sure know your way around in bed..." Clark heard Bruce yawn. "Thanks, for... Relieving my stress, so to speak."
The blue eyed alpha couldn't help but press a gentle kiss to the omega's shoulder. "It's my pleasure, I'm here for you. Always."
And while Bruce may not know the full extent to that, Clark did, and that was enough. No matter what, he would be there for this man, this beautiful omega, even if he was being used. It was his duty as Bruce's alpha, even though the rich man didn't know that Clark was all his, in every respect. But that was fine. He could wait. He was good at waiting.