My Sister Broke the Last Boundary That Night

I settled onto the sofa, my body still heavy, catching my breath. From the far end of the living room, Claudia watched me with that smile of hers I knew only too well: the one she used when she knew she was winning something. Sandra, my wife, was still on her knees on the rug, her hair stuck to her face and her lips shining with saliva and with what I’d pulled out of her pussy barely ten minutes earlier. A thread of my cum was still hanging from her chin and she didn’t even bother to wipe it away.

We’d been together, the three of us, since eleven at night. It was nearly one in the morning and I still didn’t fully understand how we’d ended up here, though I didn’t care all that much about understanding it either.

Sandra took off her bra — her tits bounced heavily, her nipples hard as stones — and was about to pull off her thong when I stopped her.

“Leave it on,” I told her. “You look better like that. All wet, your cunt showing through underneath.”

She smiled and obeyed. She’d always had that capacity: to surrender completely when the moment was right. Six years married and I still found myself surprised to see her like that, submissive, her panties soaked through and her hair a mess.

Claudia settled into the armchair in the corner with her legs spread wide — her dress hitched up to her waist, no panties on, her shaved cunt gleaming under the light — and beckoned to my wife with a gesture. Sandra went over to her on all fours, that round, firm ass pointed at me from the coffee table. The white thong, already darkened by moisture, had sunk between her cheeks and showed the exact shape of what it covered: swollen lips, the slit outlined beneath the fabric. I stood there watching without moving, my cock waking up again against my thigh.

My sister took her hair gently and guided her straight to her cunt. Sandra didn’t hesitate. She stuck out her tongue and started licking from bottom to top, long laps that made Claudia arch her back against the armchair. She closed her eyes for a moment, breathed out slowly, then looked at me again while my wife ate her cunt with loud, sloppy licks.

“Deeper, baby,” she told Sandra, pushing her head down. “Take it all. Like that. Suck the clit. Yeah, there, don’t stop.”

Sandra obeyed as if she’d been doing it for years. She drove her tongue between the lips, sucked, slurped, and Claudia tugged her hair hard enough to make her moan against her flesh.

“There are some things in my bag,” Claudia said without stopping moving my wife’s head. “Near the door.”

I got up without asking, my cock already rock hard, pushing against my underwear. The bag was black, leather, and inside I found a small egg-shaped vibrator and a silicone dildo of considerable size, thick and veined, almost the size of my own cock. I took both out and left the lubricant in there; we weren’t going to need it. My wife had been dripping for a while now.

“Which one first?” I asked, holding them up in front of her.

“The egg is mine,” Claudia said. “The other thing is for your wife’s cunt. She’s going to take it all the way.”

She kept stroking Sandra’s hair while giving me instructions with that calm she’d always had, as if everything had been decided in advance. It was something that had fascinated me about her forever, and I’d never told her.

“Tell your wife to lie on her back on the table,” she said. “Knees bent, wide open. Let everything show.”

Sandra obeyed before I even opened my mouth. She lay down on the lacquered wood with her arms at her sides and her knees spread as far as they could go. The thong had shifted and I could see one lip of her cunt peeking out from the side, pink, swollen, glossy. The living room light hit her full on, mercilessly, illuminating her wet pubis, her belly rising and falling, her tits pointing at the ceiling.

Claudia took the egg vibrator, brought it to her mouth, lubricated it with saliva on purpose so I’d see her do it, and switched it on. The buzz was soft but constant. She looked at me with an expression I’d never seen on her until that night, something between provocation and concentration.

“Now you’re going to see how fucking turned on your wife really gets. How soaked her cunt gets until it’s dripping onto the table.”

She pressed the vibrator over the fabric of the thong, right against the clit. Sandra let out a short moan and clenched her fists against the wood. Her hips started moving on their own, seeking more contact, grinding against the egg, and in a matter of minutes the damp patch in her underwear turned into a puddle. The slick was running down the slit of her ass and wetting the table’s wood.

“That’s it,” Claudia said quietly, as if she were speaking only to Sandra. “That’s how I want to see you. Like a bitch in heat, with your cunt swollen and crying for more.”

Claudia pulled the thong aside with two fingers, leaving my wife’s cunt completely exposed, and pressed the egg directly against the bare clit. Sandra let out a scream that echoed through the entire living room. Claudia shoved two fingers into her at once, all the way in, and started fucking her with her hand while the vibrator kept buzzing at exactly the right spot.

“Look how hard she’s squeezing them,” my sister said to me without taking her eyes off Sandra. “Look how she’s taking them. Come here, touch her. Put it in her too.”

I stepped closer. Sandra had her eyes closed and her mouth half open, her chest rising and falling quickly. The tip of the silicone dildo was still in my hand. I pressed it against her lips and she opened her mouth without opening her eyes and started sucking it, coating it with saliva, while Claudia kept working her fingers inside her cunt and torturing her clit with the egg.

“Good,” Claudia murmured. “Get it nice and wet, because in a minute your husband’s going to shove it down your cunt to the back of your throat.”

Sandra moaned around the silicone and arched her back. She was almost coming already. Claudia noticed and yanked the vibrator away all of a sudden, pulled out her soaked fingers, and stuffed them into Sandra’s mouth along with the dildo. My wife sucked them too, tasting her own slick, with no shame at all.

“Get on all fours,” Claudia ordered. “Ass up, head down. And you —” she pointed her chin at me — “now it’s your turn to have some fun.”

Sandra had her ass in the air, the thong buried between her cheeks, her knees planted on the wood. I knelt behind her. I pulled the little triangle of fabric aside and opened her cunt lips with my thumbs. She was open, red, dripping. I pressed the tip of the dildo to her entrance and watched her part for it on her own, swallowing the first inch.

“Put it in,” Sandra begged me, her voice already broken. “All of it. All the way. I don’t care if it hurts at first, I want to feel every bit of it.”

I started slowly. I slid it in carefully, with pauses, watching Sandra lower her head and grit her teeth without complaining, watching her cunt open around the silicone inch by inch. When it was all inside, all the way to the hilt, I started moving it. Out and in, slow at first, faster after that. The silicone came out glossy with slick every time, and with each thrust there was an obscene slapping sound that filled the room.

Claudia was still standing in front of me. She’d hiked her dress up to her breasts and was rubbing her cunt with two fingers, watching me work it into my wife. She watched me fuck her with an expression that wasn’t exactly lust, but wasn’t neutrality either. It was something more complicated, something I recognized but couldn’t name yet.

Sandra started asking for more out loud.

“Faster, fuck, harder, shove that rubber cock into my fucking womb.”

Claudia crouched down and spoke into her ear, filthy things I could barely make out — “you like your husband fucking you with a dildo, don’t you, slut?”, “say you like it” — and my wife answered with short moans and muffled yeses that slipped between her teeth. The sound filled the room: the silicone going in and out, Sandra’s panting, Claudia’s low voice, my own heavy breathing.

Until Sandra turned her head and looked directly at me, her eyes wet and her jaw tight.

“I want you to fuck me too,” she said. “At the same time. The ass with the rubber cock, the cunt with you. Both holes full. Now.”

Three months earlier I would have said that was impossible. That night I was no longer thinking in terms of possible or impossible.

I yanked my underwear down in one motion. My cock sprang free, swollen, the head already wet. Claudia saw it and licked her lips without bothering to hide it. She came closer without anyone asking her to, wrapped one hand around it — the first touch of her fingers on my cock made me shiver — and stroked it a couple of times while bending to take the dildo by its base with her other hand.

“Come on,” she whispered. “Put it in.”

She pulled the dildo out of Sandra’s cunt and pressed it against the other hole, tighter, and started pushing slowly, twisting it, forcing the entrance open. Sandra let out a long cry that ended in a moan. At the same time I positioned myself behind her and found her cunt easily, wet and warm and open. My cock sank all the way in with one thrust.

“Oh God, oh God,” Sandra panted. “Both of them. Both at once.”

As I drove in with my cock, Claudia pumped the dildo in and out of her ass in a rhythm different from mine, almost opposite. When I went in, she pulled out. When I pulled out, she pushed. My wife was trapped between the two of us, double-impaled, and could do nothing but moan against the table and drool over the wood. I could feel the silicone through the wall of flesh, moving alongside my cock, and it was a sensation I didn’t know how to process.

Claudia handled everything with a precision I didn’t have. At one point she lifted her gaze to mine and our foreheads almost touched over Sandra’s back. She smelled of red wine and something sweeter I couldn’t identify. She held my gaze without blinking while the two of us kept fucking my wife at the same time.

“How long have you been not looking at me?” she asked in a very low voice. Just for me.

I didn’t answer. I didn’t know what to answer. I pushed harder inside Sandra and felt her cunt tighten around me.

Too long. Way too long. Since we were teenagers and I’d convinced myself that looking at her like that was something I had to bury and never dig up again.

Sandra came with a strangled cry that made the living room walls vibrate. Her whole body seized, her cunt clenched around my cock until it almost made me finish, and she gushed over my thighs, over the table, everywhere. She collapsed against the wood and lay still, just breathing, fingers splayed over the wet surface. I pulled out in time, the tip throbbing, holding myself back. Claudia took the dildo out carefully and set it aside. Then she helped my wife lie down on the sofa, covered her legs with a blanket from the backrest, and stood there looking at her for a second.

“That was some night,” Sandra murmured from the sofa, her eyes already nearly closed. “Probably the best of my life.”

Claudia smiled. Then she turned to me, her gaze dropping straight to my cock, still hard and pointing at her.

***

We were left alone in the middle of the living room. She was wearing a strappy dress that had shifted out of place during the night, one breast already nearly spilling from the neckline. Her hair was loose over her shoulders, her lips slightly swollen, and she was looking at me with a calm that wasn’t coldness but the opposite: the calm of someone who’s made a decision and is no longer afraid of it.

“There’s something I’ve never told you,” she began.

“I know,” I said.

She frowned for a moment.

“You know?”

“I don’t know exactly what. But I know it exists.”

She came closer slowly. She sat down beside me on the floor, knees pulled up to her chest, and looked at me sidelong. The living room was silent except for Sandra’s deep breathing at the other end.

“Everything about tonight with your wife was real,” she said. “I’m not faking that. But that’s not what I came here looking for tonight.”

I waited.

“I came for you,” she said. “I’ve gone years without saying it because it seemed insane and because I always assumed you’d look at me like I was sick or like you didn’t care.”

I should have said something smart then. I didn’t.

“When we were kids,” I said, “I used to look at you too. I was ashamed and I pushed it down as hard as I could. But it was there. I didn’t leave home at nineteen just to find work.”

Claudia breathed out slowly, as if she’d been holding that in her chest for a long time and the air she let out had weight of its own.

“And now?” she asked.

“Now too.”

She stood up without saying anything else and held out her hand. I took it. She led me toward the big armchair in the corner, where there was more space. Before I sat down, she knelt between my legs, pulled my underwear down to my ankles, and looked up at me with my cock a centimeter from her mouth.

“I’ve spent years imagining this,” she said.

And she took my cock into her mouth all at once, in a single motion, until I felt the tip hit the back of her throat. She closed her lips around the base and stayed there for a few seconds, her eyes locked on mine, swallowing around my cock. Then she started sucking. Slowly at first, drawing it nearly all the way out and then taking it back in, licking the head with a flat tongue, blowing me with a technique that said a great deal about the nights she’d spent thinking about doing this. She pulled a moan out of me I hadn’t expected from myself.

“I don’t want to finish you like this,” she murmured, letting me go, a thread of saliva hanging from her lip. “I want to finish with you inside me.”

She stood, pulled the dress over her head — she was completely naked, with small firm tits, a flat stomach, her shaved cunt shining with wetness — and sat astride me. Knees braced on the cushions on either side, hands on my shoulders. There was no urgency in any of her movements. It was the exact opposite of what had happened earlier in that same room.

She kissed me slowly. Without haste. With a concentration that felt completely new coming from her, as if she wanted to record every detail of something she didn’t want to forget. She slipped her tongue into my mouth and tangled it with mine while one hand searched for my cock below.

I felt her fingers find me and position me at her entrance. She was soaked, hot. She sank down little by little, taking the time she needed, breathing with me, lips parted. I felt her open around me, swallow me inch by inch, tightening around me from the inside as if her cunt had been made to measure for my cock.

When she was fully down, with my cock buried to the hilt, she went still.

“Don’t move yet,” she murmured against my neck. “I want to feel you there. Still. All the way to my womb.”

So we stayed like that for a while. She held me with her legs and breathed slowly. I had my hands on her bare back and could feel her pulsing from inside, warm and real, the walls of her cunt contracting around my cock in small, voluntary throbs. The living room was the same as always, the same furniture as always, the same city outside the windows. But everything had been rearranged somehow in a way I wouldn’t have been able to explain.

It was real. Everything was perfectly, irrevocably real. My cock inside my sister’s cunt. Real.

When she started moving, it was with a slow, steady rhythm, almost hypnotic. Not the in-and-out motion but that other one, circular, where there was almost no separation between the two of us yet still friction, heat, pressure exactly where it needed to be. Her clit rubbed against my pubis with every turn and I could feel her trembling each time. She brought one hand up to my face and set it on my cheek with a softness that was hard for me to process.

“Look at me,” she said. “Look at me while you fuck me.”

I looked at her.

That was the only thing she asked for the entire time it lasted. For me to look at her. And I did, without taking my eyes off her for a single second, because it was the only thing that made sense to do in that moment, even with my cock buried to the hilt in my own sister and her riding me with her tits brushing my chest.

The rhythm gradually picked up, without jumps, without abrupt changes, like something growing from within instead of being imposed from outside. Claudia started rising and falling, no longer just circling, really fucking me now. Every time she dropped onto me she let out a short gasp against my mouth. I grabbed her ass with both hands and helped her move, setting the pace, driving her down to the hilt each time.

“Like that,” she panted. “Like that, don’t stop, give me all of it.”

She closed her eyes and pressed her forehead to mine. Her breathing had broken. Her fingers were squeezing my shoulders hard and I felt her nails digging into my skin.

“Together,” she said. “I want it at the same time. Inside. Come inside.”

I planted my hands on her waist and pushed up while she came down on me, syncing every thrust with her descent. The next few seconds were everything at once: her broken voice in my ear, her heat gripping me, her weight on top of me, my own body responding before I even told it to. I felt her come around my cock, squeezing me in waves, and that sent me over. I emptied myself inside her with a strangled groan against her neck, shot after shot, feeling her tremble and accept it all without moving.

We finished with our bodies pressed together, not separating, not making a sound. Just that shared trembling that lasted longer than I expected and left me unable to think about anything else. I could feel my cum leaking slowly out at the edges, running down over my thighs and hers, mixing with her slick.

Afterward Claudia stayed seated on top of me, still impaled, resting all her weight there, her arms around my neck and her cheek against my temple.

“Thank you,” she said very softly.

“For what?” I asked.

“For not being scared. For coming inside me.”

I’d been scared too. I still was, honestly. But there were things worth more than fear, and that was something a thirty-four-year-old ought to know.

From the sofa, Sandra was asleep. The blanket covered her to the shoulders and she was breathing evenly and deeply, oblivious to everything.

Claudia glanced over there for a moment, with an expression that was hard to read, then looked back at me.

“How do we go on from here?” she asked.

“I don’t know yet.”

She nodded slowly.

“Neither do I.”

But there was no anguish or regret in that answer. Only the quiet certainty that some things could no longer be undone, and that there was no real reason to want to undo them.

I stayed with her on the armchair a while longer, in silence, with the lights low and the city sleeping outside, with my cock still inside her and slowly softening. I thought that if someone had seen us from the window they would have seen only two people embracing. They would never have guessed everything that had happened before, or everything we were leaving unresolved, or the exact weight of that silence between us.

We’re a complicated family. We always were. That night we’d only stopped pretending we weren’t.