Her older brother watched us through the crack in the door

After the first time with Mateo, I left his building with my legs trembling and the certainty that I wanted to do it again as soon as possible. I had just turned eighteen, I was about to finish my last year of school, and for the first time I felt that desire was not something I read about in novels: it was something that throbbed between my thighs when I thought about him, a wet, hot pulse that squeezed my cunt until I had to close my eyes on the bus.

Almost three weeks went by before I could see him again. Final exams came crashing down on me, my afternoons slipped away between notes and strong coffee, and the only way I had to ease the tension was to lock myself in my room and touch myself quickly while thinking about the way Mateo had looked at me as I got undressed. I slid two fingers between my already soaked lips, rubbed my clit in circles, and came biting the pillow in less than five minutes. It wasn’t enough. My body wanted more, and I had already learned to listen to it. I wanted a cock inside me, not my fingers. I wanted to feel full, open, drilled deep to the core.

When I turned in my last exam, I decided I wasn’t going to wait for him to call me. I was going to show up at his house unannounced, dressed like I never had before.

From the back of my closet I took out a short dress my aunt had given me for Christmas and that I had never dared to wear. It was black, made of stretchy fabric, and clung to my body in a way that made me feel big and small at the same time. I decided not to wear a bra: my breasts were small, my nipples wouldn’t show through that dark fabric, and the mere idea of going out like that left me tingling between the legs. Underneath I put on an ultra-thin string thong that cut into my slit with every step, rubbing my ass and my cunt at the same time. Before leaving I ran my hand over my crotch and checked that I was already wet just from thinking about what I was going to do.

—Today I’m going to leave him speechless —I murmured in front of the mirror.

I took the five o’clock bus. The driver, who already knew me from so many mornings in uniform, looked up from the wheel and lingered a second too long on my legs. I sat in the back, crossed my knees, and stared out the window, trying not to think about how many eyes might be following me through the rearview mirror.

I got off downtown and walked the three blocks to Mateo’s building. I rang apartment 6 B.

—Yes? Who is it? —a male voice answered through the intercom. It wasn’t him.

—Hi, I’m looking for Mateo. I’m Camila, a school friend.

—He stepped out for a bit, but if you want, come up and wait for him here.

—Okay. Thanks.

I went up in the elevator biting my lip. I had imagined the whole trip there, except for running into another person. It had to be his brother. Mateo had mentioned him once: he studied engineering in another city and only came back during vacations.

When the elevator doors opened, I saw him standing in the apartment doorway. He must have been about twenty-three, tall, broad-shouldered, wearing basketball shorts and a worn T-shirt. His eyes stuck to my legs before slowly climbing up to find my face. He didn’t even try to hide it. That shamelessness flattered me more than I would have liked to admit.

—Come in, come in. I’m Sebastián, the little guy’s brother.

—Camila —I said, and as I crossed past him I thought I heard him mutter something I couldn’t make out.

—Sorry?

—Nothing, nothing. I was saying I didn’t know my brother had such… punctual friends.

I smiled. I knew exactly what he had almost said.

***

I sat on the living room sofa, the same one where three weeks earlier I had been on top of Mateo for the first time. Just remembering it lit something on fire inside me. I pulled my dress down, but the gesture was useless: it fit me the way it fit me, and my traitorous nipples pressed against the fabric as if they wanted to come out and say hello. I noticed too late. When I looked up, Sebastián was already staring at them.

I acted like nothing was happening. For a while I’d known that showing myself off a little —just a little— gave me a sense of power that was hard to explain. I crossed my legs and let the silence stretch. He settled into the opposite sofa, arms behind his head, knees apart, with no effort at all.

—Are you cold? —he asked at last.

—No. Why?

—No reason. The house is cool even though it’s summer.

I looked at him out of the corner of my eye again and struggled to process what I saw. Between the shorts and his thigh, a piece of something that had no decent name was peeking out. I looked away immediately and pretended to study the bookshelf, but curiosity got the better of me and I looked back. It wasn’t my imagination. It was the head of his cock slipping out of the shorts, dark, thick, hairless, with the shiny glans peeking out as if it had a life of its own. My mouth watered before I even realized it.

—If you’re that interested, I’ll introduce you —he said, and when he lifted his head I realized he’d been watching me watch him for quite a while.

I felt heat rising up my neck.

—Are you crazy? I’m your brother’s girlfriend.

—If it offends you, tell me and I’ll put it away. But since you couldn’t take your eyes off it, I thought maybe you’d like to see it up close.

—Put it away. He could get here any minute.

—Don’t worry. I can hear the lobby door from here. I’ve got trained ears.

I stayed quiet. I also had trained ears for that door, for other reasons. And meanwhile Sebastián, very slowly, lifted the elastic of his shorts with two fingers and let his cock slide all the way out, resting against his thigh. It was huge. Long, thick, with veins standing out all the way up to the head, and a clear drop beading at the tip. I clenched my thighs hard and felt my thong soak through in an instant.

—You went too far, anyway.

—Yeah? And you didn’t go too far coming here dressed like that to a house that isn’t yours?

—What do you mean, “dressed like that”?

—Look how everything shows. Look at your nipples, Camila. You’re begging to be looked at.

—These? —I said, and before thinking twice I slid the straps down until my breasts were bare.

My nipples were so hard they hurt. I offered them to him uncovered, and pinched one between my thumb and forefinger while holding his gaze. I heard him suck in through his teeth. I saw his cock jerk against his thigh and rise fully, pointing at the ceiling, hard as stone.

—You’re bold. Do you realize what you’re doing?

—I do. And do you realize what your little brother doesn’t have?

—What’s my brother missing?

—He’s missing half —I told him, and held his gaze.

I got down from the sofa and took a step toward him. I don’t know when I decided I was going to do it. I only know that suddenly I was on my knees between his legs, with my mouth inches from his cock, feeling it throb almost against my lips. I grabbed it with my hand. It didn’t fit completely in my fist. I ran my tongue from the base to the tip, very slowly, and felt a gasp escape him. I parted my lips around it and sucked the head, tasted it, took it deep until the tip touched my throat and made my eyes water.

—Look at how you suck, slut… —he murmured, grabbing my hair—. And this is with you lacking practice. Swallow it, swallow it all.

I pulled it out with a strand of saliva hanging from my chin and took it back in, each time deeper, feeling him breathing raggedly above me. I licked his balls, sucked the shaft from top to bottom, pumped him with my hand while running my tongue over the tip. I was so wet it was running down my thighs.

And at that exact moment, exactly then, we heard the lobby door.

***

I sprang up like a spring. I pulled my straps back up, tugged my dress down, ran my hand through my hair and over my mouth to wipe off the saliva. Sebastián adjusted his shorts, stuffing his cock as best he could off to one side, and leaned back against the sofa as if he’d been in that position for an hour.

Mateo appeared in the living room carrying a convenience-store bag.

—Cami! What are you doing here? What a surprise.

—That was the idea —I said, trying to keep my voice steady.

—I was keeping her company, little brother —Sebastián said from the sofa without looking up—. Didn’t leave her alone for a second.

—Ah. Well, thanks, I guess —Mateo looked at me with that confused puppy face that sometimes made me melt and other times made me want to shake him—. Come on, let’s go to the room and I’ll show you what I bought.

Before following him, I looked at Sebastián. He gave me a smile that wasn’t kind. It was the smile of someone who knew something I still hadn’t fully accepted.

***

I went into the room behind Mateo. The door ended up almost closed. Almost. A crack of five fingers stayed open toward the hallway, and I —I don’t know when I decided this either— didn’t bother to close it all the way.

—Look. A lava lamp. Isn’t it cool?

I looked at it. It was hideous.

I didn’t answer. I stepped closer, took the lamp out of his hands, set it on the desk, and shoved him onto the bed. He landed sitting, feet still on the floor, and before he could react I was already pulling my dress over my head. I was left in my thong, breasts bare, nipples pointed and my soaked cunt dripping down the inner side of my thigh.

—But Cami… my brother’s in the living room, wait…

—Shut up.

I pulled his pants and boxer briefs down to his ankles. His cock sprang out, hard, pointing at the ceiling. Small compared with his brother’s, but hard enough for me. I knelt quickly and took it in my mouth eagerly, all the way to the base, feeling him moan softly, feeling him clutch my hair with that awkward boyish clumsiness of someone who still doesn’t know what to do with his hands. I sucked his head, pumped him with my hand and mouth at the same time, coated him in saliva.

I looked up from below. And over his shoulder, through the crack in the door, I saw an eye. A dark eye, fixed, unblinking. Sebastián was there, watching everything.

I felt a jolt in my chest. It wasn’t fear. It was something else.

Let him watch. Let him stay there and watch.

I climbed on top of Mateo, yanked off my thong with one sharp pull, and sent it to the floor. I grabbed his cock with my hand, rubbed it a couple of times against my open lips to wet it well with my own slick, and slowly started sinking down on it, never taking my eyes off the crack. I felt it enter me centimeter by centimeter, felt my cunt open to take it, felt it squeeze him with its walls until he let out a whimper. Mateo had his eyes closed, his head thrown back. He wasn’t going to notice a thing.

—Oh, Cami, like that, like that…

—Do you like it? —I asked, but the question wasn’t for him.

I started moving on top of him slowly, up and down, taking almost all of him out before slamming back down to the hilt. Then faster, my hips circling, feeling my own juices run down and soak his balls and pubic hair. The bed creaked. I squeezed my breasts with my hands, pinched my nipples, licked my fingers and took them back down to my clit to rub it while I rode him. And outside, in the hall, another man was pressed to that crack, watching me fuck his brother.

When I turned my waist and gave Mateo my back, I did it for one reason only: to face the door. So Sebastián would have the full view. My ass rising and falling on his brother’s cock, my thong lying on the floor, my back arched, my tits bouncing with every thrust. I spread my legs as wide as I could, braced my hands on Mateo’s knees, and started bouncing on him, giving Sebastián a crystal-clear view of how his brother’s cock was going in and out of my dripping cunt.

Through the crack I saw him open the door a few inches wider. I saw him take his cock out of his shorts. I saw him start to masturbate, slowly at first, his left hand braced on the frame so he wouldn’t lose his balance, his right hand moving up and down that huge shaft I had been sucking five minutes earlier. I saw him watching my face while he worked himself, and I saw how he understood —because he did understand— that I was doing this for him.

I ran two fingers over my mouth, got them good and wet with saliva, and brought them down to my clit. I started rubbing it in circles while continuing to move up and down on Mateo, never taking my eyes off Sebastián. I spread my legs wider for him. I showed him everything. How my cunt stretched around his brother’s cock, how my clit pulsed beneath my own fingers, how my ass trembled every time I dropped all the way down.

—Ah, Mateo, you’re so good at this —I said, just loud enough to be heard from the hallway—. Fill me up, give it all to me.

—You like it, baby?

—I love it. Faster, faster. Ruin me.

Sebastián increased the pace of his hand. He jerked himself hard, fist clenched, biting his lip to keep quiet. I increased the pace of my hips until my ass made a wet sound every time I landed on Mateo’s pubic bone. The crack had opened a little wider now; it wasn’t just an eye anymore, it was half a face. And that half face looked at me with a hunger I had never seen in anyone before. I licked my lips. I ran my tongue over them very slowly, for him. I squeezed one tit and brought the nipple to my mouth, never stopping riding, never taking my eyes off him.

I felt Mateo tightening underneath me. His cock got even harder inside me, swollen, ready to explode.

—Cami, I’m gonna come, wait…

—Don’t wait. Come, come now. Empty yourself inside me.

Mateo came with a muffled groan, gripping my waist, digging his fingers into my skin as he pumped hot ropes into the depths of my cunt. I felt every throb of his cock emptying inside me, and I bit my lip not to laugh at how fast he’d lasted. I leaned slightly forward, kept rubbing my clit with two fingers, gave Sebastián time, and when I saw through the crack that he was about to go too —that his jaw was tightening, that his hand was speeding up, that the tip of his cock was shining— I let myself fall all the way down onto Mateo, clamped my thighs, and let out the scream I’d been holding for half an hour. I came hard as hell, with spasms that made my legs shake, feeling Mateo’s semen start to run out of me mixed with my own slick.

Sebastián came against his own hand, bent over, without staining the floor. I saw the white spurts sliding between his fingers, thick, abundant. Even for that, he was careful.

***

I got off Mateo. He kissed the back of my neck, told me I was the best thing that had ever happened to him, told me other sweet things I no longer heard. I felt Mateo’s cum running down the inside of my thigh as I stood up. When I went to get dressed, the thong wasn’t where I’d thrown it.

Someone had taken it as a souvenir.

We went down for ice cream on the corner. Mateo told me he was going on vacation with his family to the coast for almost a month. I listened half-heartedly, nodding, smiling when it was expected, but inside I was thinking about something else. I was thinking about that crack. About that eye. About that half face that had looked at me like no one had ever looked at me before. I was thinking about that huge cock I’d had in my mouth and hadn’t managed to get in my cunt.

And while I kissed him at the bus stop, I knew I was going back to that apartment. I knew I was going back soon.

And I knew perfectly well who wasn’t going to be on vacation.