The apartment smelled like leftover arepas and the cheap coconut oil Camila used on her hair. Mateo had just gotten off a double at the warehouse and all he wanted was a shower and the leftover rice. He kicked his boots off by the door, dropped his keys, and headed down the short hallway toward the bathroom.
The door was cracked. Light spilled out. He heard the soft, wet sound first—then Camila’s voice, low and breathless in Spanish.
“Ay… así… just like that…”
Mateo stopped. He knew he should turn around. They were twenty-three and twenty-five, sharing the place because rent in the city was stupid and their parents back in Medellín still thought they were “figuring it out.” They’d lived together two years without anything weird. But the sound pulled him closer. He put his eye to the gap.
Camila sat on the closed toilet lid, panties around one ankle, tank top shoved up under her tits. Her legs were spread wide, feet braced on the floor. One hand worked between them—two fingers buried, thumb rubbing hard circles over her clit. The other hand was pinching her left nipple. Her head was tipped back, eyes half-closed, mouth open. Her clit looked huge. Swollen. It stuck out past her fingers, dark pink and glossy, the hood pulled all the way back. Every time she dragged her thumb over it her whole body twitched.
Mateo’s cock went hard so fast it hurt against his work pants. He watched her push a third finger in, stretch herself, then pull them out shining and go right back to that big clit. She was muttering now.
“Fuck… I’m so close… please…”
He shifted his weight. The floor creaked.
Camila’s eyes snapped open. She froze, fingers still inside her, staring straight at the crack in the door. For a second neither of them moved. Then she yanked her hand away like she’d been burned and scrambled to pull her tank top down.
“Mateo—what the fuck—”
He pushed the door open the rest of the way. “I heard you.”
Her face was flushed dark. She tried to close her legs but the panties were still tangled on her foot. He could see everything—pussy lips puffy, clit still sticking out, swollen and wet. She noticed him looking and made a small, helpless sound.
“Get out.”
“You’re shaking.” He stepped in and shut the door behind him. The bathroom was tiny. His knee almost touched hers. “You were about to cum.”
“So?” Her voice cracked. She finally kicked the panties off. “Everybody does it. You don’t walk in on me.”
“I didn’t walk in. You left the door open.” He crouched in front of her. Up close her clit looked even bigger, thick and shiny, the tip peeking out. “That thing’s huge right now.”
Camila covered herself with both hands. “Don’t.”
“Let me see.” He didn’t touch her yet. Just looked. “I’ve never seen one stick out like that. It’s swollen as hell.”
She bit her lip. Her hands stayed where they were but she didn’t push him away when he gently moved them. Her clit was right there, fat and sensitive-looking, the skin around it darker and a little puffy from how hard she’d been rubbing. A thin string of wet stretched between her fingers when she pulled them away.
“Camila.”
“What.”
“You were so close. You want me to finish it?”
She stared at him. Her chest rose and fell fast under the tank top. For a long moment the only sound was the drip of the faucet. Then she nodded, once, tiny.
Mateo reached between her legs. He didn’t go inside. He just used two fingers the way she had—light at first, sliding on either side of that big clit, then pressing the pad of his thumb right on top of it. She jerked like he’d shocked her.
“Fuck—easy—”
“Too much?”
“No. Just… it’s really sensitive when it’s like this.” Her voice was thin. She spread her knees wider on the toilet lid, giving him room. “Slow. Then faster.”
He did what she said. Circled it. Rubbed the underside. Every few strokes he dragged his thumb all the way up the length of it and she made a broken little noise. Her clit twitched under his hand, getting even harder. She was soaked. He could feel it dripping onto his wrist.
“You’re dripping all over the floor,” he said.
“I know.” She grabbed his wrist, not to stop him—to press him harder. “Right there. Don’t stop. Don’t fucking stop.”
He kept the same rhythm. Her hips started rolling up into his hand. The tank top had ridden up again; her tits bounced every time she moved. They were full, brown nipples tight. He watched her face more than his hand. Eyes squeezed shut, mouth open, bottom lip caught between her teeth. She was close. He could feel it in the way her thighs started shaking.
“Mateo—I’m gonna—oh my god—”
He rubbed faster, tight little circles right on the tip of her clit. She came hard. Her whole body locked up, back arching off the toilet, a sharp cry tearing out of her. Her clit pulsed under his thumb, over and over. More wet soaked his fingers and ran down his palm. He didn’t stop until she grabbed his wrist again and pushed him away, oversensitive.
She slumped against the wall, breathing hard, legs still spread. Her clit was even more swollen now, standing out red and shiny. Cum—her cum—glistened on his fingers.
“Holy shit,” she whispered.
Mateo stood up. His cock was straining so hard against his zipper he thought it might rip. Camila’s eyes dropped to it. She licked her lips without thinking.
“Your turn,” she said, voice rough. “Take it out.”
He didn’t argue. He opened his pants, shoved them and his boxers down just enough, and his cock sprang free. Thick, dark, already leaking. Camila stared at it. Then she slid off the toilet onto her knees on the bath mat, right between his legs.
“I’ve thought about this,” she admitted. She wrapped one hand around the base. Her fingers didn’t meet. “Helping you. Since you helped me.”
She stroked him slow at first, then faster, twisting her wrist the way he liked even though she’d never done it before. Her other hand came up and cupped his balls. Every few strokes she leaned in and spat on the head, slicked it down. Mateo braced one hand on the sink and watched her. Tank top still bunched under her tits, nipples hard, face flushed, that huge clit still visible between her spread thighs while she knelt.
“You gonna cum on me?” she asked.
“Where?”
“My tits.” She pulled the tank top up higher, fully exposing them. They were perfect—round, heavy, dark nipples. “I want it. All of it.”
He didn’t last long. The sight of her on her knees, hand flying, tits out, plus the memory of her clit twitching under his thumb—he groaned and came. Thick ropes shot across her chest, the first one hitting her collarbone, the next two striping both tits, white against her brown skin. More dripped down onto her stomach. She kept stroking through it, milking him, until he was empty and twitching.
Camila looked down at herself. Cum clung to her nipples, slid between her tits. She used two fingers to scoop some up and rubbed it over one nipple, then the other. Then she looked up at him and smiled, small and dirty.
“Still swollen,” she said, nodding at her own pussy. “You wanna touch it again while I clean this up?”
Mateo dropped back to his knees in front of her. He pushed her thighs wider. Her clit was still huge, still glossy. He rubbed it gently with two fingers while she used the hem of her tank top to wipe the rest of the cum off her tits. Every time he circled the tip she shivered. She was already getting wet again.
“We’re really doing this,” she said.
“Yeah.”
She reached down, covered his hand with hers, and pressed him harder against her clit. “Then don’t stop until I cum again. And next time…” She bit her lip. “Next time you can put it in me. If you want.”
Mateo’s cock, still half-hard and sticky, twitched against his thigh. He kept rubbing. Outside the bathroom the city kept moving, cars and voices and the smell of someone grilling on a balcony. Inside, his sister spread her legs wider on the bath mat, cum drying on her tits, and let him play with her swollen clit until she came a second time, quieter this time, shaking against his hand.
They stayed on the floor a long time after. Neither of them moved to get dressed. Camila’s fingers traced through the mess on her chest. Mateo’s thumb rested lightly on her clit, feeling it pulse.
“Tomorrow,” she said finally. “When you get home. Door will be open again.”
He nodded. His hand stayed between her legs. She didn’t ask him to move it.
The next night he came home later than usual. The lights were off except the one in the bedroom. He found her on her stomach on the bed, ass up, two fingers already working her clit from behind. She looked over her shoulder when he walked in.
“Took you long enough.”
He didn’t say anything. Just stripped, climbed on the bed behind her, and replaced her fingers with his. She was soaked. Her clit was swollen again, fat and easy to find. He rubbed it while he pushed two fingers into her pussy, then three. She pushed back, moaning into the pillow.
When he finally slid his cock into her she came almost immediately—tight, pulsing, soaking his balls. He fucked her through it, one hand still on her clit, the other gripping her hip. She reached back, grabbed his wrist, and made him rub harder.
“Right there—fuck—cum on my tits again after. I want it.”
He pulled out at the last second, flipped her over, and stroked himself over her chest while she played with her own clit. She came a second time just as he did, back arching, tits covered in thick white streaks. She smeared it in with both hands, then pulled him down and kissed him, tasting herself on his fingers.
They didn’t talk much after. She just rolled onto her side, still naked, and let him keep one hand between her legs, idly stroking her huge, sensitive clit until they both fell asleep.
The door stayed open every night after that.