Disclaimer: I don't own The OC. It belongs to a bunch of people I don't know and Fox.
A/N: This story contains slash. If you find youself offended by such pairings, please don't read. You've been warned. For those who don't mind a little guy on guy action, reviews are very much appreciated and will make me want to write more :D
Guilty Pleasures

Floating in the pool, the sun's rays heating his flesh, Seth continues to chatter incessantly about graphic novels as Trey floats next to him. His parents are still at work and Ryan is off with Marissa somewhere rekindling their romance, leaving Trey and Seth alone. Normally, Seth would prefer playing a video game, but the air conditioner is busted, and so when Trey suggests taking a dip in the pool to cool off, Seth finds himself quickly agreeing.

Wondering if he's still paying attention, Seth raises his head off of the raft he's floating on to find Trey staring at him with the weirdest expression on his face. Faltering, he watches in uncharacteristic silence as Trey slips off his raft and swims the short distance to him. Wary, he opens his mouth to speak and then suddenly Trey is kissing him, all teeth and tongue and Seth has never felt anything so good or so wrong in his entire life.

He can feel goose bumps rising along the sensitive skin of his arms and back as Trey pushes him off the raft he's floating on, and for an instant he panics as the water rises up to reach him, but then Trey wordlessly maneuvers him against the far edge of the pool and he forgets everything but the thrill of having Trey's body pressed up against his own.

He is only vaguely aware of the unyielding cement biting into the tender skin of his back and then Trey does this thing with his tongue and grinds his hips against his erection just so, and suddenly Seth isn't aware of anything except for the white, hot fire that is coursing through his veins and making him shiver despite the sweltering heat.

Deep down he knows it's wrong even as he kisses Trey back, their tongues twinning together, after all, this is Ryan's brother. Ryan's flesh and blood and while Seth realizes on some level that should discourage him, it only ends up exciting him further.

Moaning softly, he fists his hands through Trey's hair, causing it to stand up in wet, wild spikes. The adrenaline coursing through him causes him to act impulsively and he bites down on Trey's bottom lip, drawing blood. Trey's cry of surprise is loud in the strange stillness of the backyard, the only other sounds the lapping of the water against the sides of the pool, their harsh breathing and that of their bodies rubbing and sliding against one another. Pulling back slightly, Seth holds his breath and watches fixated, as Trey's eyes darken dangerously and he shivers in both fear and in excitement, a tantalizing mixture that leaves him breathless and wide-eyed.

He knows Trey is dangerous and unpredictable. It's the reason why he finds himself attracted to him. Seth knew the first instant he'd laid eyes on Ryan's brother that he was different. He doesn't give a fuck about right and wrong or playing the hero and that only turns Seth on more.

He watches as Trey blinks, wet lashes clumped sinfully together, before lifting a hand and wiping the bead of blood that has pooled on his bottom lip. The vicious, crimson fluid contrasts sharply against the skin of Trey's thumb, and mesmerized, Seth watches as Trey's tongue flicks out and licks at the coppery fluid.

Seth can only stare as Trey moves in closer, lithe muscles rippling. Trey reminds Seth of a big cat. All smooth, graceful, calculated moves with an underlying sense of danger and he feels himself harden further. Nervously, he opens his mouth, his first instinct when unsure to babble incessantly, but then Trey is on him again, his tongue slipping through Seth's swollen, parted lips to plunder the soft, sensitive cavern of his mouth, and all Seth can do is groan in pleasure as the taste of Trey's blood fills his mouth.

His whole body is conscious of Trey's body pushed up against his own, of Trey's erection pressed against his thigh, and then Trey shoves his hand down the waistband of Seth's swim trunks, his fingers brushing through wiry curls to wrap around his erection and he jerks in Trey's hand at the intimate contact. Squeezing his eyes shut, his breath leaves him in sharp gasps as Trey rubs up and down his length with rough, calloused fingers.

The wise-ass part of Seth briefly wonders if Trey learned this particular talent while in lock-up, considers asking him, but then Trey's hand moves further south to roughly fondle his balls and all thoughts quickly dissipate.

Trey's breath is hot against the side of his neck, his lips tickling the sensitive flesh, and Seth shudders as his own fingers dig painfully into Trey's arm to bruise the smooth flesh.

He's so close, the pleasure now unbearable, and then he feels the familiar tingle in his lower spine, and a tightening in his balls, signalling that he's seconds from away from coming and he allows a strangled cry to escape through lightly parted lips.

He's unaware of a car door slamming in the distance, but Trey is, and it takes Seth a few seconds to realize that Trey has released him and is now floating several feet away. Eyes popping open in confusion and frustration, Seth makes a sound of protest deep in his throat and reaches for Trey.

"Later," Trey whispers and seconds later Ryan's voice pierces the silence.

"Trey, Seth? You guys home?"

"Back here, bro," Trey says, his voice even as he climbs out of the pool. Seth watches in uncharacteristic silence as Trey walks to a lounge chair and grabs a towel, wraps it around his waist before lowering himself into a chair and placing an open magazine on his lap to hide his erection.

Guilt and frustration vie for dominance in Seth when Ryan comes into view and Seth doesn't know whether he wants to apologize profusely to Ryan for what just happened with Trey or to beat the shit out of him for his horrible and insanely cruel timing.

Seth is aware of Ryan's lips moving but is unable to hear anything over the pounding of his own heart and the guilty thoughts forming in his mind. He knows what he and Trey did is wrong. He knows that if Ryan were ever to find out, it would ruin their relationship forever, not to mention his relationship with Summer, but he can't help wishing that 'later' were right now.

End.