She showed up at the apartment after midnight, thinking her boyfriend would be home from his shift. Instead, only his roommate answered the door in boxers, half-asleep and rubbing his eyes. "He's crashing at work tonight," he said. "Power outage or some shit."
She stepped inside anyway, wet from the rain, her thin shirt clinging to her tits. He offered her a towel and a beer. They sat on the couch, talking shit about her boyfriend's long hours. Then the conversation shifted. He joked about how loud they fucked sometimes, how the walls were thin. She laughed but felt her pussy twitch at the memory of being bent over the same couch.
One minute they were joking, the next his hand was on her thigh. She didn't push it away. "This is fucked up," she said, but her voice came out low and horny. He leaned in and kissed her hard, tongue pushing past her lips. She kissed back, already reaching for his cock through the boxers. It was thick and half-hard, growing fast under her grip.
He pulled her shirt off, sucked on her nipples like he had been waiting months to do it. She shoved his boxers down and wrapped her fingers around his dick, stroking it rough and fast. "Fuck, you're bigger than him," she muttered. He groaned and pushed her back on the couch, yanking her jeans and panties off in one move.

He spread her legs and buried his face between them, licking her pussy with long, dirty strokes, tongue flicking her clit until she was soaking the cushions.
She grabbed his hair and ground against his mouth. "Eat that pussy," she told him. He did, sucking her clit and sliding two fingers inside her, pumping them deep while she moaned loud enough for the neighbors to hear. When she came, she cursed and shook, thighs clamped around his head.
He flipped her over onto her knees, lined up, and shoved his cock into her from behind. No slow start—just hard, deep thrusts that made her ass slap against him. "Take it," he grunted. "Your boyfriend's roommate is fucking you raw." She pushed back on every stroke, pussy gripping him tight. He reached around and rubbed her clit while he pounded her, making her cum again, this time with her face buried in the pillow.
They moved to the floor. She rode him, bouncing on his cock, tits swinging, sweat dripping down her back. He slapped her ass and told her how tight and wet she was. She leaned down and kissed him messy, tongues fighting, while she ground her clit against him until she came a third time, shaking and swearing.
He flipped her onto her back, hooked her legs over his shoulders, and fucked her deep and fast. "Gonna fill you up," he warned. She nodded, eyes glassy. "Do it. Cum in me." He slammed in hard, held there, and unloaded, thick pulses of cum flooding her pussy while she clenched around him.
They lay there breathing heavy, his cock still twitching inside her. She knew it was wrong, knew her boyfriend could walk in any minute, but her body felt too good to care. He pulled out slow, cum leaking down her thigh. She reached down, scooped some up, and licked it off her fingers while he watched.
"Round two in the shower," she said. He grinned and helped her up. They fucked again under the hot water, her back against the tiles, legs wrapped around him, water washing away the evidence only to start fresh. By the time she left at dawn, her pussy was sore, her legs shaky, and she already knew she'd be back.