Her Brother Watched Us Through the Crack in the Door

The first time I slept with Damián, I discovered what I was capable of, and for the first time I felt that I truly liked it. That afternoon I left his apartment with my pussy still throbbing, swollen and slippery, my thighs sticky with semen and saliva, and dying to do it again. I got home with that strange sensation of not fitting inside my own skin, my nipples so sensitive that the brush of my bra made me clench my teeth.

The problem was the timing. There were barely a few weeks left before the school year ended, and what lay ahead were long days of studying and taking exams. My admission to university was at stake. The hard work paid off: I passed everything, some subjects with high marks, and all I had left was the final exam so I could enroll the following year in the nursing program taught in the capital.

Between one thing and another, two weeks had passed since that afternoon, and during that time I hadn't fucked anyone again. I had barely had a couple of minutes to slip my hand beneath the sheets, two fingers all the way inside my pussy and my thumb rubbing my clit brutally until I came biting the pillow, just to ease the tension. My body was asking for much more. Just imagining Damián on top of me, burying his cock all the way to my uterus, already made me feel my panties getting wet.

That was why I decided to surprise him. I was going to show up at his house without warning, assuming he would be just as horny as I was. And I planned to do it differently from usual. I was tired of him always seeing me in the same boring school uniform, so that afternoon I put on a short dress made of dark fabric that outlined the shape of my ass with every step. Underneath, a thin thong that dug between my pussy lips with every movement and reminded me, step by step, how wet I already was.

Since the fabric was thick and didn't show anything through it, I decided not to wear a bra. My tits were small, and I could afford that luxury. My nipples, on the other hand, stood out from a mile away: hard, swollen, two obvious little points against the fabric. Once I was dressed for the occasion, I went out to catch the bus. The usual driver stared at me, thrown by seeing me at that hour and dressed that way. I could have sworn he used the aisle mirror to look over my entire body, although I never managed to confirm it.

Let him look, I thought. Today I want them to look. Today I want all of them to get hard.

When I reached the city, I walked determinedly to Damián's building and buzzed the intercom.

—Hello? Who is it? —I didn't recognize that man's voice. It had to be one of his brothers or his father.

—Hi, is Damián there? I'm Mariana, a classmate.

—He went out for a moment. If you want, come upstairs and wait for him here.

—Okay, thanks.

***

When the elevator opened, a guy a little over twenty years old was waiting for me at the apartment door, tall and well-built. He was wearing house clothes: a basketball jersey, loose shorts, and flip-flops. The moment I saw his face, I realized he was Damián's older brother. He had told me that his brother studied far away and, once the term ended, came home until classes started again.

As soon as I stepped out of the elevator, I saw him openly looking me up and down. Far from bothering me, his boldness felt flattering, and I felt a hot pang between my legs.

—Hi, Mariana. Come in, come in. Welcome.

—Thanks, that's very kind of you.

As I walked past him, I felt him fix his gaze on my ass. “Fuck,” I heard him mutter under his breath.

—Sorry? Did you say something?

—No, nothing. Let me introduce myself: I'm Esteban, the brother of that idiot you go to class with. Although I can see now that I underestimated him. I didn't know he had friends like you.

—So he hasn't told you anything about me. The truth is, I'm his girlfriend.

—Well, well, look at quiet little Damián. Look what he was keeping to himself.

We went into the living room and sat on the same couch where, a few days earlier, I had ridden his younger brother, dripping all over him until I soaked his thighs. Just remembering it lit me up all over again, and I felt wetness running down the inside of my thigh. I shifted, trying to cover my legs as much as possible, tugging the fabric downward. When I raised my eyes, I realized Esteban's gaze had stopped on my tits.

The memory of what had happened on that same couch made my nipples show shamelessly through the dress's thin fabric. I didn't know what to do. If I covered myself, he would understand that I'd noticed, and everything would become more awkward. So I decided to carry on as if nothing were happening.

For a while now, showing myself off in front of others had fed my ego, and it wasn't something I avoided. I had always liked tight clothes that emphasized my curves, and going without a bra whenever I could. The tension in the air could be cut with a knife. I glanced at him: his arms were folded behind his neck and his legs were spread. Beneath his shorts, a thick bulge was visible, one that hadn't been there when I came in. We sat in silence, not knowing what to say, less than half a meter apart.

—Hey, can I ask you something? Are you cold? —he finally said, breaking the silence.

—No. Why? —I knew perfectly well why he was asking.

—No reason, no reason. It's just that this house is cool, even in the middle of summer.

When I looked at him from the corner of my eye again, I thought I saw something poking out between his leg and his shorts. It can't be, I thought. It's impossible. I'm imagining it. But I needed to be sure, so I looked again. And there it was, without a doubt: the thick, purplish head of his cock poking over the edge of the fabric, swollen, with a clear drop gleaming on the glans. How could it reach that far? My mouth watered before I could stop it.

—If you want, I can introduce you to it, since you're staring at it so much. —Shit. He had caught me.

—What are you talking about now?

—This.

With a quick movement, he pulled it completely out of his shorts. Even at rest, that cock was enormous: thick as a wrist, long, veins standing out all along the shaft, with two heavy balls hanging beneath it. I didn't know where to look. I had to pretend to be indignant, because they could arrive at any moment and find us like that.

—Who the hell do you think you are?

—Since you couldn't take your eyes off it, I thought you wanted to see it. —He smiled mischievously as he gripped it and gave it two slow strokes, making another drop of pre-cum appear at the tip.

—No, I don't. Put that thing away; someone might catch us.

—If that's what you're worried about, relax. You can hear the front door from here. —And in fact, I knew that better than anyone.

—That doesn't matter. You've gone too far. I'm your brother's girlfriend. Don't you care?

—Not at all. I'm not jealous, and he doesn't have to find out anything.

—Find out what?

—That you were staring at my cock.

—Well, you couldn't take your eyes off me either. —I shouldn't have, but I decided to play along and see what happened. He was right: if someone appeared, I had plenty of time to pretend nothing was going on.

—How could I not look at you? Look at how you're dressed. Not to mention how clearly your nipples show.

—Which ones? These? —I said, lowering the straps of my dress to my waist and leaving my tits bare. My nipples were so hard they hurt, pointing straight at him.

—Uff, you're wicked. Look what you did. —And he pointed to his cock, now completely erect, even bigger than I'd imagined, throbbing against his belly.

—I see you like them. Must be a family thing, although not everything is inherited. —I tossed it at him without taking my eyes off it, my mouth half open.

—What's the matter? My idiot brother doesn't have what the older one has?

—No, he doesn't.

—Would you like to try it?

***

I was at a point of no return. If I crossed that line, who knew how it would affect what I had with Damián. I couldn't, I shouldn't. But somehow, without really knowing how, I suddenly found myself on my knees in front of him, his cock throbbing an inch from my face. I grabbed it with both hands—they didn't even cover it completely—and ran my tongue from his balls to the tip, savoring the salty taste that made me squeeze my thighs together. I took the entire glans into my mouth and sucked it slowly, hearing him let out a hoarse moan. I was just about to swallow it all the way down when we heard the front door opening. As best I could, I wiped the drool away with the back of my hand, adjusted my dress, and returned to the couch, while Esteban shoved his swollen cock back into his shorts as best he could.

—Mariana, what are you doing here? What a surprise —Damián said when he saw us together on the couch.

—That was the idea. —I laughed.

—I was looking after her for you, little brother, while you were gone. —As he said it, he gave me one last look that sent a shiver over my whole body.

—Oh, thanks, I guess. Come to the bedroom, Mariana, and I'll show you what I went to buy.

As I walked away with Damián, I noticed that Esteban couldn't take his eyes off my ass. If his brother had taken a few minutes longer, I would already have been gagging on that enormous cock until I cried. But that's fate. When I entered the bedroom, I pretended to close the door, though I left it slightly ajar. I had something in mind.

—Look, this is what I bought —he said, showing me a pathetic lava lamp.

I didn't say a word. I pushed him onto the bed until he was lying on his back, his legs bent and his feet on the floor. Meanwhile, I pulled off my dress in one tug and was left almost naked. I grabbed his pants and boxer shorts and yanked them down to his ankles in one motion. His cock sprang against his belly, already half hard, and without saying a word I bent down and took the whole thing into my mouth.

—B-but, Mariana, my brother is here. What are you doing?

—Shut up. In this relationship, we do whatever I feel like. Is that clear?

—O-okay.

I sucked him slowly, making noise on purpose, playing my tongue around the glans and lowering myself to the base with my mouth open. I ran my tongue over his balls and went back up, looking him in the eyes while a strand of saliva ran down my chin. I knew there was another pair of eyes on the other side of the door, and that thought made my nipples hard as rocks and my pussy dripping inside my thong. As soon as I felt Damián was firm enough, I finished undressing and kicked my thong near the door, soaked through, marked by a dark wet stain in the middle. I was so wet that my thighs had stuck together. Everything involving his brother had turned me on far too much. I climbed on top of Damián, took hold of his cock, guided it to the entrance of my pussy, and slowly lowered myself, feeling myself open inside as it sank all the way in with a single downward motion.

—Uff, Mariana, you're so wet. It went right in.

—Ah... that's how horny you make me. —I began to move, slowly at first, raising and lowering my hips to feel him slide all the way in and out, with the wet little sounds my pussy made each time I impaled myself on him to the base.

—Please, keep it down a little. They might hear us.

Hearing that, I slapped him across the face without stopping my movements.

—Shut up and let me handle it. You don't get to complain. —I pressed my tits against his mouth and made him suck my nipples while I rode him, bracing one hand on his chest and grinding my pussy against his cock at an increasingly forceful pace.

I changed positions and turned my back to him, squatting with my hands on his knees. Now Damián had a close-up view of my ass rising and falling, watching his cock disappear completely inside me again and again, shining with my juices, while, just as I had guessed, I had his brother spying on us through the crack in the door. As soon as Esteban realized I was looking at him and his brother couldn't see him, he opened the door a little wider and pulled his entire cock out again—that enormous cock whose head I had licked a little while earlier. He held it in one hand and stroked it slowly with the other, caressing his balls without pause, watching his younger brother's girlfriend fuck him.

I spread my legs wider so Esteban would have a full view: my pussy lips stretched around Damián's cock, my asshole tight just above it, everything glistening and dripping. I ran two fingers over my clit and rubbed it slowly without stopping my bouncing, so the older brother could see clearly how his little brother was filling me.

—Ah... ah... you're doing that so well, I love it —I told Damián while looking Esteban in the eyes, sticking out my tongue and inviting him.

—Do you really like it, baby?

—Yes, I love it... keep going like that, don't stop... faster, harder, break me. —I saw Esteban understand the game and quicken his pace, spitting into his hand to make it slide more easily along the full length of his cock. I licked my lips without breaking eye contact. I imagined that he was the one fucking me, that enormous cock opening me from the inside, and felt my pussy tighten on its own around Damián's.

—I'm about to come...

—Do it. Leave it all inside me. Fill my pussy, come deep inside me.

I sped up my hips too, grinding against him, slamming my ass into his thighs with every downward thrust, never taking my eyes off Esteban. The feeling of being watched, of having him on the other side of the door jerking off just for me with that enormous cock in his hand, pushed me over the edge much sooner than I expected. When the orgasm shook me from head to toe, I clenched everything, feeling Damián explode inside me in hot spurts that filled me deep inside, while I bit my lip to keep from screaming. I saw Esteban come at the same time: his cock jerked and shot a thick, white load, which he caught in the hollow of his hand so it wouldn't leave a trace on the floor, never taking his eyes off my impaled ass for a second.

When I felt Damián couldn't hold out any longer, I slowly rose, letting his cock slide out of me with a wet sound, and semen began running down the inside of my thigh. I squeezed the tip with my hand, milking out the last drops. I turned one final time, still on all fours on the bed, and showed Esteban my ass, spreading myself slightly with my hand so he could see my pussy dripping with his younger brother's semen. He got an image to remember, his hand still stained as it rested over the cock that wouldn't stop twitching. Then we stayed in each other's arms for a few minutes, until we decided to go out for ice cream.

When I went to get dressed, the door was already closed. I put on the dress and nothing else: my thong wasn't where I had thrown it. Someone had kept it as a souvenir, probably to shove the soaked fabric into his mouth or rub it over his cock while remembering that afternoon. Luckily, Damián didn't notice, and we went out into the street as if nothing had happened, our thighs still sticky and his brother's semen dripping down inside me.

After ice cream, he walked me to the bus stop. There he told me he was going on vacation with his family and that he didn't know when we would see each other again. I listened, nodded, and kissed him. Inside, I was thinking about something else.

I was going to spend that vacation alone, discovering everything I was capable of doing with my pussy, my mouth, and my ass. And, for the first time, that idea didn't frighten me at all.