Straight Stepbrother's Midnight Craving

Alex's bare feet padded silently across the creaky wooden floorboards of the old summer house, the kind of place his dad and Jamie's mom had bought on a whim after their shotgun wedding two years back. It was supposed to be a cheap rental spot for college kids like him—twenty years old, broad-shouldered jock with a buzzcut, captain of the lacrosse team, and every bit the straight dude who'd plowed through more sorority girls than he could count. But sharing it with Jamie, his nineteen-year-old stepbrother, was turning this summer into a pressure cooker of tension he couldn't quite name.

Jamie was the polar opposite: slim, toned from yoga and dance classes, with tousled dark hair that fell into his hazel eyes, always wearing those tight little shorts that hugged his perky ass like a second skin. Flirty as hell, too—constantly tossing winks and double-entendres at Alex, calling him "big bro" in that teasing lilt that made Alex's jaw clench. Alex had brushed it off as Jamie being Jamie, the openly gay wild child who lived for attention. But tonight, at 2 a.m., something shifted.

Thirsty from a late-night gym session, Alex headed to the kitchen for water, passing Jamie's bedroom door. It was cracked open—just a sliver, but enough for the dim glow of a phone screen to spill out, illuminating the scene inside. Alex froze, his heart slamming against his ribs. There was Jamie, sprawled naked on his bed, legs spread wide, one hand wrapped around his thick, seven-inch cock, stroking it slow and deliberate. His other hand teased his balls, pinching and rolling them as soft moans escaped his lips. Jamie's body arched, his lithe muscles flexing under smooth, tanned skin, ass clenching as he pumped faster, whispering filthy encouragements to himself. "Fuck yeah, take it deep... just like that..."

Alex's mouth went dry, his own dick twitching traitorously in his basketball shorts. He was straight—fucking straight—but watching Jamie's hand glide over that veined shaft, pre-cum glistening at the tip, sent a bolt of heat straight to his groin. He should look away, but his feet wouldn't move. Jamie's hips bucked, his free hand sliding down to circle his hole, dipping a finger in as he jerked harder, gasping. Alex's cock hardened fully now, straining against the fabric, a confusing ache building in his gut. What the hell was this? He backed away quietly, retreating to his room, but sleep didn't come. All he could see was Jamie's body writhing, that perfect ass begging to be grabbed.

The next day dragged. Alex hit the weights harder, trying to sweat out the image burned into his brain, but every time Jamie pranced around in his speedo for a swim, smirking knowingly, Alex's gaze lingered too long on the curve of his stepbrother's cheeks. By midnight, the house was silent again, the summer heat thick and humid. Alex couldn't take it. He prowled to the kitchen in nothing but his loose gym shorts, cock already half-hard just from the anticipation he refused to name.

The fridge light flickered on as he grabbed a beer, and there was Jamie—leaning against the counter in tiny boxer briefs that did nothing to hide the outline of his dick, pouring himself a glass of water. His eyes lit up with that predatory gleam. "Midnight snack, big bro? Or are you here for something... thirstier?"