I Lied to My Wife So I Could Sleep with My Sister

When Lucía got up off me, she was leaving a warm trail wherever she moved. The last of it was now running slowly down the inside of her thigh, a bright, thick line of semen mixed with her juices that I couldn’t take my eyes off. My gaze kept drifting to her open cunt, swollen, still dripping what I’d emptied into her just minutes before.

She went to the kitchen and came back with a roll of paper towels to clean and dry everything. She crouched down in front of me, ass perked up, and ran the paper between her legs, pressing her pussy lips together to squeeze out my cum. I watched the paper stain white and clear, and I felt my dick give one last jolt of pure filth. At that moment, when things were apparently getting back to normal and all that was left was to tidy up the mess, I felt completely out of place.

It was almost noon. The three of us had to work, and we’d let ourselves get carried away so much that we lost all sense of time and of the moment.

Renata sat up, went to the bedroom, and changed clothes to go back to the office. Lucía dressed too. She was the brightest of the three, as if nothing that had happened had affected her at all.

—Bro, I’m off. This was way better than going to the gym. Say goodbye to Renata for me with a kiss, I’ve got to stop by my job too.

And just like that, without making a big deal out of it, she left the house. I finished cleaning the couch and the cushions, which were soaked with pussy juice and cum, got dressed, and went back to my laptop, where unread emails were piling up. Everything felt like it was happening in another dimension, like I was watching it from the outside.

Renata came down, gave me a kiss, and left.

—Honey, today I’m going to be a bit later getting back from the office, I need to make up the hours I was at home… Ahh, and my ass hurts like crazy from how you fucked me, but I loved it. You wrecked my ass, asshole.

I was left alone again, with a lot of unanswered questions and a strange mix of feelings. On one hand, I was still ecstatic with pleasure; on the other, worried about what would come next.

They didn’t seem affected by it. They could go back to their routines with a ease that amazed me. They had a lot more experience than I did at shoving that filthy, sexual side of their day-to-day life off to one side.

Work helped me in part, but it didn’t quiet my doubts. The afternoon went on and I still couldn’t erase what had happened from my head. I kept swinging from horniness to guilt and back again.

Thinking about it got me hard just from imagining what we’d done. I opened the living-room camera app and went back to the moment my sister climbed on top of me and we started fucking. I watched it all over again, and I masturbated furiously. I pulled my cock out over the top of my pants, already soaked with pre-cum, and started jerking off while watching the scene in detail: how Lucía spread her cunt open with two fingers to guide my dick in, how she dropped down suddenly and took it to the balls, how her hips rolled and her tits bounced as she rode me. I paused at the moment when Renata was licking her ass from behind and sliding her tongue into her hole while my sister kept riding me. I gripped myself harder and jerked off staring at that mess and at the camera’s black eye too, secretly wishing one of the two of them was spying on the app just like I was and saw me come. I imagined Renata in her office, with her hand slipped under her skirt, rubbing her clit while she watched me cum. I imagined Lucía in the work bathroom, panties around her ankles, two fingers inside herself. With that image I exploded. A thick rope of cum jumped all the way to my navel, and then another, and another, splashing onto my hand. Filth was getting into me from every angle.

Renata came back when it was already time for dinner. We talked about work, about some repairs still pending around the house, about the supermarket list. The morning’s topic didn’t come up. It was driving me crazy. When we went to bed I couldn’t take it anymore and had to bring it up.

—Aren’t we going to talk about what happened today?

—What do you want to talk about? I loved it. We could do it again, couldn’t we?

—Don’t you think something’s wrong with what we did?

—Tomi, I think if we’d talked it through and experienced it before, the three of us would’ve been happier.

—Renata, don’t you love me?

—Of course I love you, and now I feel like I love you a little more, because I can be fully myself without hiding anything. I feel relieved, grateful that you entered this world that your sister and I had been hiding from you.

—But you always chose her over me.

—She’s beautiful and she turns me on. We have a history that started before ours did. But that doesn’t take away from what we feel. You’re the man of my life, I love you. That said, my ass is going to need a long time to rest before it’s back in action. You tore it all up, I’m still leaking your cum when I go to the bathroom. Hehe.

I wasn’t sure I could handle all this the way she could. I still wasn’t in the mood to joke around. I kissed her on the forehead, turned over, and tried to sleep, though inside I kept circling the image of Lucía sitting on top of me, slowly spearing herself on my cock.

***

The next day I went to work and made plans with my sister to have lunch together at a place near the offices. I needed to talk to her face to face too, looking her in the eyes.

—Tomi, how are you?

Just like Renata, she seemed to have no trouble at all pretending nothing had happened. She was wearing a floral dress, her hair pulled back in a makeshift bun, and her lips barely painted.

—Hey, Luci. Everything good? Was the day calm?

—Loads of work, but tomorrow I can go back to the gym early if you’ve got a free minute to come with me. —Mischievous smile.

—Lucía, we need to talk about this. I don’t feel completely good about what we did.

—No. Don’t start with that. You always chose her and I’ve already accepted that. I don’t want to lose this too.

—This isn’t about winning or losing. It’s about whether it’s right or wrong.

—Tomi, did you enjoy what we did? —she lowered her voice and kept going with the questions.

—Yes.

—Did you enjoy fucking your own sister’s cunt?

—Yes.

—Did you like it when you came all over both our faces and we sucked it clean off you?

—Yes.

—So?

I lowered my own voice too, until it was barely a whisper.

—I enjoyed it more when we finished together and you kissed me.

She stared at me, not expecting that comment. She thought what was tormenting me was the filthiness of the threesome, but she couldn’t imagine that I was falling in love with her too. The whole thing had taken an unexpected turn inside me.

Lucía had always been my soulmate, the best person in my life and, besides that, a beautiful woman who had always turned me on in silence. The hand jobs I’d secretly dedicated to her for years, looking at some photo of hers on my phone in a swimsuit or remembering some innocent brush, some time she walked past me in a towel coming out of the bathroom and I saw the beginning of her tits. Discovering that she was obsessed with me too brought back that teenage love I’d kept under lock and key. That morning of intimate, romantic sex had broken a barrier and opened up a possibility that, until yesterday, had seemed impossible.

—Tomás, I love you too.

That sentence finished convincing me.

—Luci, nobody here knows we’re siblings, right?

—No.

—Then why don’t you act like you’re my girlfriend, sit next to me, and kiss me?

Her eyes lit up. I noticed her breathing quicken and saw her hesitate for a second before moving. I stretched out my arm and took her hand over the tablecloth.

—I love you too, Luci.

She leaned in and kissed me timidly, with an old affection, as if she were reclaiming something that had always belonged to her. We ate like we were real boyfriend and girlfriend, holding hands every so often, laughing at any stupid thing. The feeling was beautiful, forbidden, and deep all at once. Every time the waiter came over, we let go of hands for a moment and joined them again as soon as he turned away.

***

I texted Renata, making up a story that I urgently had to take a friend to the hospital, that he was going to be operated on and had asked me to spend the night with him. I typed it with slightly trembling fingers, hoping she wouldn’t call to ask for more details. She answered a little later, understanding, not questioning anything, wishing a nonexistent friend a speedy recovery. Clear path: I was going to have a night of being a couple with my own sister. I’d go straight to her place when I got off work. She’d already be there, waiting for me.

I got to the door and it was hard to ring the bell. When she opened it, I almost dropped my keys on the floor. She was wearing loose panties, more like men’s boxers than the feminine underwear you’d imagine on a voluptuous woman like her, and one of my old T-shirts that was obviously huge on her, with no bra underneath, her nipples showing through the fabric. It was exactly like coming home and finding your girlfriend in comfy clothes. Perfect, I thought. This is exactly what I needed.

She gave me a short kiss, just lips against lips, that everyday kiss of a couple who’d been together for years.

—Are you going to take a shower, honey? I already left some comfy clothes in the room so you can take off that office stuff. I also left your cologne in the bathroom.

She had a lot of my clothes stored in her place, from some move, from some forgetfulness. Renata had never been that thoughtful, but Lucía had always had those gestures with me since we were kids. I’d always loved that dynamic between us. It just made sense differently now.

I showered slowly, letting the hot water clear my head too. I put on the sweatpants and the T-shirt she’d chosen, put on my cologne, and went down to the living room. She was on the sofa, watching some dumb series on TV, with a blanket over her legs and a cup of tea on the side table.

I curled up between the backrest and her body, spooning her, slipped my hand under her T-shirt, and grabbed a tit. I squeezed it slowly, feeling the nipple harden between my fingers, and she arched her back a little to press herself closer to me. I pinched the nipple, twisted it with two fingers, stretched it. I heard the sigh escaping her nose. I kissed her neck behind the ear, that spot where skin smells different from the rest, and bit her earlobe. My cock swelled right away, hard as iron, and she felt it against her ass. She moved her hips to rub against it and feel the heat through the fabric of the sweats, without turning her face, without looking at me. I let go of her tit, slid my hand across her belly, over her navel, and slipped it into the boxer shorts. I found her soaked, the pubic hair stuck down with her own flow. I spread her pussy lips with my middle finger and went for her clit. It was swollen, throbbing. I started rubbing it in circles, slowly at first, then faster. She panted silently, squeezing her thighs against my hand.

—You’re so wet, sister —I whispered in her ear.

—I was leaking waiting for you. Thinking about this all day, imagining how you’d put it in when you got here.

I slid two fingers inside her. Her cunt made a little sucking sound that got me even hotter. I could feel her walls hot and tight, my fingers coming out dripping wet when I pulled them out, and I pushed them back in, moving them upward, looking for that spot where she started to tremble. I found a rough patch and pressed down. Lucía jerked and dug her nails into my forearm.

—There, there, don’t move from there…

I kept the pressure there and with my thumb kept rubbing her clit. I felt her whole body tightening from the inside, felt her starting to grit her teeth so she wouldn’t scream. A wave of shivering ran down her legs, her fingers got soaked, and she flooded my hand with a warm gush.

—You came so fast —I said against her neck.

—I told you I’d been waiting for hours. Now put it in me, come on, I can’t take it anymore.

Without saying a word she pulled off the loose panties, kicking them to the floor with her feet, and opened one ass cheek with her hand, slowly, as if inviting me in. I pulled my sweats down to my knees and my cock sprang out, hard, with a violet tip and dripping.

—Put it in. I want to feel you inside. Now.

I placed the head of my glans at the entrance to her cunt and pushed in slowly. She was so wet, incredibly hot, and even so she clenched so hard I could feel the flesh forcing its way in under pressure. The head went in first and she let out a long sigh, as if she’d been waiting hours for that moment. I kept sliding it in all the way, centimeter by centimeter, until I felt my balls resting against her ass cheeks. She couldn’t close her mouth, in an expression of silent pleasure. I grabbed her hip with my free hand and started moving.

With short strokes, limited by the small space on the sofa, I fucked her slowly. I’d pull my cock out halfway and then shove it back in to the hilt, feeling how her cervix answered every time I hit it. She moved her hips with the rhythm, pushing her ass back, trying to make him go deeper.

—Harder, Tomi, harder. Fuck me like your girlfriend.

I sped up the thrusts. The sofa made a soft noise, the creak of the wood accompanying the slapping sound of my cock going in and out of her soaked cunt. I brought my hand around the front, kept rubbing her clit while I penetrated her. She sought my mouth, turning her face just a little, and kissed me with her tongue inside, moaning into my mouth. I bit her bottom lip and squeezed her tit with the other hand, feeling the nipple like a tiny stone between my fingers.

—I’m going to come again, don’t stop, don’t stop…

I pushed harder, driving it all the way to the balls each time, feeling her juices run down the crack of her ass and wet my balls. Hearing only the background noise of the TV that neither of us was watching, and on top of that the slapping, the held-back sighs, the broken words.

—You’re so hard inside me, little brother.

—Your cunt is sucking my whole cock, Luci, squeezing it like it doesn’t want to let me out.

—It’s yours. All yours. Put it all in me, fill me up.

I felt her orgasm before it arrived: her cunt started clenching in waves, squeezing me so tightly I could hardly move inside. I dug my fingers into her hip and gave her the last deep thrusts, feeling the cum rise up from my balls.

We came together again. I came exactly when I said in her ear, “I love you, sister.” I shot a thick load deep inside her, and then another, and another, feeling her cunt fill up and the semen start to leak back out, mixed with her own fluids, running down her thigh and staining the couch cover. She pressed my hand to her chest and stayed like that, motionless, with ragged breathing, with my cock still inside her, pulsing, emptying itself little by little.

I left it in her for a long while, softening slowly inside her, and every so often I’d give her a little kiss on the nape. When it finally slipped out, I felt a warm trickle of my own cum spill out and wet her thigh. She laughed softly.

—You filled me up completely, asshole. Tomorrow I’m going to be leaking your cum when I sit down at the office.

—I love that idea.

There was no dinner. Just the two of us, wrapped up on the sofa, still sticky, until sleep overtook us with the TV still on.