I Came Home Early and My Sister-in-Law Was Coming Out of the Bathroom

Renata is my sister-in-law's name, although everyone in the family has called her Reny since she was a child. Her parents and mine have known each other since they were young, and there is an informal arrangement between the two families that began as a joke and ended up coming true. When my brother Tomás turned six, Renata's father announced, half seriously and half jokingly, that his daughter was already born to be his bride. No one believed it would become anything more than an anecdote repeated at every birthday. Eighteen years later, my brother and Renata got married after four months of dating because she was already pregnant.

The day my niece was born, Renata had just turned nineteen and I had just turned eighteen. I was in my final semester of high school. Because of the financial problems surrounding my brother's first job, my parents offered to let them stay in the house for as long as necessary. And so, with my parents working all day and my brother away until night, Renata and I ended up spending many hours alone together.

Between college assignments, my mother's errands, and caring for the baby, we always had a short while to talk in the kitchen. We'd always gotten along well. As children, we played together in the yard. During our teens, the four of us went to the movies: her, her sister Sofía, my brother, and me. Sofía and I almost dated one summer, because Renata kept pushing us together, but it never went anywhere. We were friends, nothing more, and we both knew it.

Renata is a little over five foot three. She has small tits, a narrow waist, wide hips, and a round but understated ass. She was never the kind of woman who stopped traffic. Maybe that was why, and because I'd known her since before she had her permanent teeth, it had never occurred to me to look at her differently. She was my brother's wife, my niece's mother, and little else. Until one October morning when she got into my head and I couldn't get her out.

Classes at the college had been suspended because of a student assembly. I got home before eleven with an overwhelming need to piss. I pushed open the bathroom door without knocking because I hadn't heard the lock or anything indicating that it was occupied, and I found Renata coming out of the shower. Naked. Her skin still wet. Her hair plastered to her shoulders. A towel hanging from her arm, not wrapped around her body.

The logical thing would have been to back away, close the door, and run to the other bathroom. I didn't. I stood frozen in the doorway staring at her, and she stared right back, unmoving, her eyes wide open. I looked over her entire body: her small tits with their dark nipples hard from the cold air, her flat stomach, her shaved pussy with a short strip of hair above it, her thick thighs with drops of water sliding down to her knees. And then what I'd been holding in for the last two blocks happened: I pissed myself. I felt the warmth running down my leg and watched the stain spread across my pants.

Renata burst out laughing. Her laughter bounced off the tiles until it made me dizzy.

“Wait, I'll bring you one of the baby's diapers,” she said between laughs, doubling over at the waist, and when she bent over, her tits moved, searing themselves into my memory forever.

I left the bathroom red with embarrassment, leaving an absurd trail down the hall. I locked myself in my room, took off my wet clothes, went to the upstairs bathroom, showered again, and changed. While the water fell over my head, all I could see was her body in front of the fogged-up mirror: the small, dark nipples, the trimmed triangle of hair, the curve of her thigh, the crack of her ass when she turned around looking for the towel. The image wouldn't go away. My cock got hard beneath the stream of water, and I didn't touch it because I was terrified of coming while thinking about her. When I finished drying myself, I was still hard, outlining my sweatpants with no possible way to hide it.

I was back at my desk, pretending to concentrate on a calculus exam, when I heard the soft knock at the door. Renata came in wearing a bathrobe fastened with a single tie, already combed and with a touch of mascara on, still barefoot. She closed the door behind her and leaned against my dresser.

“Can I ask you something?” she said.

“Anything you want,” I replied, closing the notebook as if that could disguise the bulge in my sweatpants.

“What happened earlier?”

“I came running in, didn't hear anyone was inside, and when I saw you like that, I froze. That's why I pissed myself. I'm sorry.”

“It's not your fault; I left the lock open. But tell me one thing, seriously.”

“Tell me.”

“What did you think of what you saw?”

I swallowed. I held her gaze without knowing what to do with my hands.

“You're really hot, Reny. Seriously.”

She narrowed her eyes slightly, as if weighing my answer.

“Are you saying that just to be polite?”

“No. I'm saying it because that's what I think. Why the doubt?”

“Because your brother has been telling me for months that I've gained weight, that I don't fix myself up anymore, that I'm not the same woman I was before. And it's starting to hurt me more than it should.”

“You gained weight, yes. But it settled on you well. Your tits look fuller, and your ass has become something I'd like to bite. If what he says is that you don't get his cock hard, he's lying, or he isn't looking at you.”

“Would you look at me?”

Two long seconds passed. Her hand rose to the tie of her robe.

“Reny,” I said, my voice less steady than I'd intended, “we can't be talking about this.”

“I think we can. Because what I need to know, I need to know now. Sofía told me a few days ago what you and she almost did one night at the beach. In detail. And ever since then, I haven't been able to get the idea out of my head: what it would feel like to fuck someone other than him. The only person I can think about without feeling like a complete traitor is you.”

I rested my elbows on the desk and put my hands over my face.

“Why me, Reny?”

“Because I know you. Because I know you won't humiliate me tomorrow. Because you won't look at me differently at the dinner table. Because we're practically family already and because, whether you believe it or not, my pussy has been wet since you walked into that bathroom and saw me. I've been squeezing my legs together for two hours.”

I looked up. Her jaw was clenched and her eyes were utterly serious. And although my head kept repeating that all of this was a monumental mistake, everything else was saying the opposite.

“Reny, this could destroy Tomás. And the whole family.”

“That's why no one will ever find out. Once. Just once. And we'll go back to being sisters- and brothers-in-law.”

Once. I didn't answer. I didn't know what to say. And she took my silence as consent.

***

She loosened the tie. The robe opened and slipped from her shoulders to the floor. She was naked in front of me again, now without the excuse of the bathroom, and this time I could look at everything calmly: her small tits pointing forward, her nipples erect and wrinkled, her pussy with that little strip of hair, her already swollen, wet lips. She stepped over to where I was sitting, settled herself on my thighs with one knee on either side of the chair, and kissed me. A long kiss, with tongue, unhurried, as if she'd been planning the move for a long time and didn't want to waste it. She bit my lower lip and slowly sucked it before letting it go.

I was still hesitating. My hands remained at my sides, afraid to touch her. She was the one who took them and placed them on her waist, her hips, her tits. I pinched her nipples between my fingers and she moaned softly, arching against me. I felt the heat of her naked pussy pressing against my cock through the fabric of my pants, and she began grinding on me, moving her hips back and forth as if she were already riding me.

“You're so hard,” she whispered against my mouth. “I can feel everything.”

She was the one who yanked my sweatpants down without getting off my lap. My cock sprang hard against my stomach and she looked at it for a second, her mouth half open. She lowered her hand, wrapped her cold fingers all the way around me, and began jerking me off slowly, sliding the skin up and down and squeezing the tip with her thumb. A moan escaped me and she smiled without taking her eyes off me.

“What a nice cock,” she said. “Thicker than your brother's.”

She slid from my lap until she was kneeling between my legs. She moved my hands away from her thighs, tossed her hair back with a quick gesture, and took my cock into her mouth in one motion, all the way down. I felt the tip hit her throat and stay there. She pulled it out slowly, leaving a strand of saliva dangling from the glans, then swallowed it all again. She sucked me with her mouth open, noisily, looking me in the eyes and hollowing her cheeks around it. One hand jerked me at the base while the other held my balls and gently squeezed them.

“Reny, stop or I'm going to come,” I told her, grabbing her hair.

She pulled my cock from her mouth with a wet pop and licked it from my balls to the tip.

“Not yet,” she said. “I want to feel you inside me at the end.”

She whispered in my ear as she climbed back onto my lap.

“Make me yours. Fuck me. I want to know what you're like when you fuck.”

That sentence was the point of no return. I carried her to the bed, laid her on her back, and took my time. I kissed her neck, sucked each of her tits in turn, nibbling her nipples until they grew hard as stones. I ran my tongue along the curve beneath her navel, bit the insides of her thighs until she arched and spread her legs wide. Her pussy was soaked, all of her trimmed hair shining, her lips open and flushed. I lowered my tongue slowly, without warning, and heard her choke back the first scream by biting the pillow so no one would hear it all the way out in the street.

I licked her entire slit from bottom to top, slowly, sucking her lips one by one. When I found her clitoris with the tip of my tongue, her hips lifted off the bed. She grabbed my head with both hands and pressed it against her pussy without letting me breathe. I slipped two fingers inside her and started moving them while sucking her hard clitoris, circling it with my tongue.

“Slowly, slowly,” she kept repeating, but her hips wanted the opposite, pushing my face harder against her pussy.

Her first orgasm came within a few minutes. I felt it because her legs trembled and closed around my head, squeezing my ears. I felt it because she clenched her pussy around my fingers and squirted onto my hand. I felt it because she said my name in a voice I'd never heard from her before, a hoarse voice that belonged neither to a sister-in-law nor to a family birthday.

“I need to feel you inside me,” she begged, pulling me toward her. “Hurry, put it in me now, I can't take it anymore.”

I climbed on top of her, ran the tip of my cock along her slit, wetting it with her juices, and pushed inside slowly, carefully, watching her close her eyes and open her mouth without making a sound. She was so wet that my cock slid all the way in at once, without resistance, until my balls struck her ass. I stayed still inside her for a second, feeling her clench around me in spasms that still lingered from her previous orgasm.

“God, you're so big,” she panted. “You're splitting me open.”

I began moving and she answered my rhythm, lifting her hips to meet every thrust. She wasn't a frigid woman. She was a woman on pause. I grabbed her legs behind the knees and spread them until I nearly had them against her shoulders, fucking her deep, feeling her pubic bone collide with mine on every downward stroke. She held her tits and pinched her nipples herself, eyes closed and mouth open.

“Like that, like that, harder, don't stop,” she pleaded quietly so no one would hear. “Split my pussy open, give me all of it.”

I pulled out, put her on all fours on the bed, and pushed my cock into her from behind again. Her round ass opened with every thrust; my fingers left marks in her pale flesh. I grabbed one cheek and slapped it. Renata moaned louder and arched her back, asking for more. I slapped the other cheek, then the first again, until her skin turned red.

“Put it all the way in, asshole, all the way to the back,” she said, clutching the pillow. “Fuck me the way he never does.”

I grabbed her hair with one hand and kept squeezing her waist with the other, driving myself into her up to the balls. She came again like that, on all fours, clenching my cock inside her so hard she nearly dragged me along with her. I felt the hot stream running over my balls.

At some point she settled herself on top, choosing the angle and the speed, and I let myself be carried away. She rode me with her hands braced on my chest, lifting and lowering her ass, her tits bouncing in front of my face. I took one into my mouth and drew a nipple between my lips, sucking it while she kept pounding herself on top of me. She changed the rhythm and began moving in circles, rubbing her clitoris against my pubic bone, biting her lip to keep from screaming.

We tried everything that fit into a morning with no one else in the house. Her back against the headboard, her legs around my waist. Her on her side, one thigh raised over mine, feeling her ass push against my hip with every slow thrust. Her mouth sucking me again while she masturbated her pussy with two fingers. Her on top again. At some point between her third and fourth orgasms, I lost count of how many she'd had.

I held out as long as I could, clenching my teeth and thinking about anything I could to keep from coming too soon. I finished when she climbed on top of me again and deliberately began squeezing my cock inside her, contracting her pussy with every downward stroke as if she were milking me.

“Come inside me,” she whispered, her voice broken, holding my face with both hands. “Fill me completely; I want to feel you right to the end.”

I dug my fingers into her hips and pulled her down hard against me. I came inside her in long spurts, feeling her pussy clamp around my cock and milk me dry to the last drop. She stayed still on top of me, my cock still buried inside her, breathing against my neck. Then she slowly collapsed to one side, my semen running down her thigh onto the sheet.

We lay sprawled across the rumpled bedspread, breathing as if we'd run a mile. She kissed the corner of my mouth, almost shyly, after everything we'd just done.

“Wow,” she said, running a finger between her legs and looking at my semen on the tip. “I didn't know it could feel like that.”

“I didn't expect this either, Reny.”

“Will we ever be able to do it again?”

I looked at her. Her hair was tousled, her cheeks flushed, one mark of mine on her shoulder that she'd have to cover with makeup until it faded, and another on her left tit that would last just as long. I thought of my brother, my niece, and the family dinners over the next twenty years. I thought about how easy it would be to say yes.

“I don't know. Today was today. We'll see about tomorrow.”

“We'll see about tomorrow,” she repeated, half smiling.

We showered separately, each in a different bathroom, changed the sheets, and put her robe away in my closet so no one would see it in the hallway. When my mother came home from work, Renata was feeding the baby in the kitchen and I was finishing my calculus exam as if nothing had happened. Our eyes met for a second. We said nothing. That was the first silent pact. The others came on their own, on other afternoons, other mornings, with the same care and the same promise that it would be the last.