I never planned to see it happen. That night the three of us were just hanging out in the living room like alwaysme, my older sister Lena, and my best friend Marcus. Lena had just turned twenty-two, Marcus was twenty-three, and I was twenty-one, still living at home while I finished school. Wed cracked open a bottle of cheap whiskey and the conversation got loose fast. Lena was wearing one of those thin tank tops that barely contained her full breasts, nipples pressing against the fabric every time she laughed. Marcus kept stealing glances. I noticed, but I didnt say anything. I never did when it came to him and her.
After a couple hours Lena stood up, stretched, and said she was going to bed. Her shorts rode up as she walked down the hall, the curve of her ass cheeks peeking out. Marcus watched her go, then looked at me with that half-smile he gets when hes about to do something reckless.
You cool if I crash on the couch? he asked.
Yeah, whatever, I said, already heading to my room. But I didnt close my door all the way. Something made me leave it cracked, and something made me stay awake, listening.
About twenty minutes later I heard Lenas door open. Soft footsteps. Then Marcuss low voice in the hallway. I couldnt make out the words, but the tone was unmistakable. I got up and moved to the crack in my door. From there I could see straight into the living room where the hallway light spilled across the carpet.
Lena was leaning against the wall, Marcus standing close, one hand braced above her head. Youve been teasing me all night, he said, voice rough. Those little shorts, that top. You knew what you were doing.
Lena laughed, soft and breathy. Maybe I did. What are you gonna do about it?
Marcus didnt answer with words. He grabbed the hem of her tank top and pulled it up over her head in one motion. Her tits spilled free, heavy and round, nipples already tight. He bent down and sucked one into his mouth, hard enough that she gasped. His hand slid inside her shorts, fingers working between her legs. Even from where I stood I could hear how wet she was.
Fuck, Marcus, she whispered. Youre big. I felt it through your jeans earlier.
He straightened, unzipped, and pushed his pants down. His cock sprang out, thick and heavy, easily nine inches, the head already glistening. Lena stared at it, lips parted. Jesus, she said. Thats not gonna fit.
It will, he told her, and the certainty in his voice made my stomach tighten. He hooked his fingers in her shorts and panties and dragged them down her thighs. She stepped out of them, completely naked now. Marcus turned her around so she faced the wall, one big hand on the small of her back, and lined himself up.
I watched the whole thing from the shadows of my doorway, cock already hard in my hand without me even realizing Id pulled it out. Marcus pushed the fat head of his dick between her pussy lips and drove in slow. Lena moaned, forehead pressed to the wall, fingers splayed. Inch by inch he disappeared inside her until his hips met her ass. She was stretched tight around him, her cunt visibly gripping that thick shaft.
He started fucking her in long, steady strokes, each one making her tits swing. The wet sound of her pussy taking him filled the hallway. Marcus reached around and rubbed her clit while he pounded her, and Lena started pushing back against him, meeting every thrust. Harder, she begged. Dont hold back.
He gave her what she wanted. His hips snapped forward, balls slapping against her, the slap of skin on skin loud enough that I was sure our parents would wake up downstairs. Lena came first, biting her forearm to stay quiet, her whole body shaking. Marcus didnt stop. He kept driving into her through the aftershocks, then pulled out, spun her around, and lifted her like she weighed nothing.
Her back hit the wall again. He hooked her legs over his arms and sank back inside her in one thrust. From my angle I could see everythinghis cock glistening with her cream, her pussy lips clinging to him on every withdrawal. She wrapped her arms around his neck and kissed him messy while he fucked her standing up, muscles flexing in his back and ass.
I stroked myself in time with his thrusts, trying not to make a sound. Marcus lasted longer than I would have. When he finally came he buried himself deep and stayed there, groaning low as he pumped her full. Cum leaked out around his cock and ran down her thighs. He held her like that for a long minute, both of them breathing hard, then gently lowered her feet to the floor.
Lena looked wrecked in the best wayhair messy, lips swollen, thighs shiny. She reached down, wrapped her fingers around his still-hard cock, and gave it a slow stroke. Round two in my room? she asked.
Marcus grinned. Lead the way.
They disappeared into her bedroom. The door didnt close all the way either. I stayed where I was, listening to the bed creak, to Lenas muffled cries, to the wet rhythm of Marcus fucking her again. I came hard against my own hand, biting my lip to stay silent.
Later, when the house was quiet again, I slipped back into my room. I knew things would never be the same, but I also knew Id watch again the next time Marcus came over. And I was pretty sure Lena would make sure there was a next time.