Sister-in-Law's Desperate Seduction

I was twenty-eight, happily married to Talia, and I thought I understood the boundaries of my life until her twenty-six-year-old stepsister Paulina sat at our kitchen table and confessed that her marriage to Hector had been completely sexless for more than a year.

Paulina’s hands trembled around her coffee mug. She told Talia everything. Hector had stopped reaching for her. No lingering kisses. No hands sliding under the sheets. She was twenty-six, aching, and the frustration had her circling the idea of cheating like a moth around a porch light.

Talia listened without interrupting. She loved Paulina. They had been stepsisters since their late teens, after Talia’s dad married Paulina’s mom, and that bond had only grown stronger. Talia did not want Paulina hunting in bars or sliding into some coworker’s messages. She wanted the hunger contained, honest, and safe.

“You can have Henrik,” Talia said, looking from Paulina to me. “If he agrees. If you both want it. I’d rather you come here than go looking for a stranger.”

I sat there with my pulse in my throat. Paulina’s dark eyes found mine. She was beautiful in a way that had always been off-limits: full mouth, long dark hair, a body that filled her clothes like a promise. I had never touched her. I had never let myself dwell on it. Now Talia was putting it on the table.

“I want that,” Paulina said. Her voice was hoarse. “God, Talia, I want that so badly I can barely sit still. Henrik?”

“Yes,” I said. Consent was not a problem. Desire had been waiting under the floorboards, and Talia had just pried them up. “If this is what you both want, yes.”

Talia booked a weekend business trip that same afternoon. She would fly out Friday and come back Sunday night. She kissed me at the airport with a look that was part love and part wicked permission.

“Take care of her,” she murmured. “And let her take care of you. I’ll see you Sunday.”

The house felt enormous after she left. I spent the afternoon pretending to work, checking my phone, walking from room to room. Paulina had texted: I’ll be there at seven. Wear whatever. I’m not wearing much.

Forbidden tension sat in my gut like heat. Talia had blessed this. Paulina wanted it. I wanted it. Still, waiting for my wife’s stepsister to walk through the door so I could fuck her all weekend made my hands shake.

She arrived at seven on the dot. The sundress was short, pale yellow, thin enough that the porch light showed the dark circles of her nipples and the absence of any line at her hips. Nothing underneath. She stepped inside, shut the door, and leaned back against it, breathing like she had been running.

“Talia told me to be honest,” she said. “So I’m going to be honest. I have been thinking about your cock for days. She gave me permission. You gave me permission. I want you to watch me first. I want you so hard you can’t think.”

“I already can’t think,” I said.

We went to the living room. I sat on the couch. Paulina took the armchair across from me, perched on the edge, and slowly, deliberately, spread her legs. The hem of the sundress rode up her thighs. She wasn’t wearing panties. Her pussy was already glossy, the lips flushed, her clit a swollen little peak.

She held my gaze and put two fingers in her mouth, wet them, and dragged them down her slit.

“I’ve been like this since I got in the car,” she whispered. “Soaked. I almost pulled over.”

She stroked her clit in tight, shameless circles. The wet sound filled the quiet room. Her other hand pulled the sundress higher until it bunched at her waist. She slipped two fingers inside herself, pumped them, then drew them out shining and rubbed her clit again, faster.

My cock strained against my jeans until it hurt. I palmed myself through the denim and she moaned at the sight.

“Take it out,” she said. “Please. I want to see how hard I make you.”

I unzipped. My cock sprang free, thick, the head already slick. Paulina’s fingers worked faster. She was fingering herself in earnest now, three fingers stretching her, her thumb grinding her clit, her eyes never leaving mine.

“Talia said I could have you,” she gasped. “She said I could fuck you until I couldn’t walk. Do you still want that?”

“Yes.”

“Then come here and eat me before I come on this chair by myself.”

I dropped to my knees between her spread thighs. The scent of her hit me first, hot and sweet. I hooked her knees over my shoulders, buried my face in her dripping pussy, and licked a long, greedy stripe from her hole to her clit.

Paulina cried out and grabbed my hair. I sucked her clit between my lips and flicked it with my tongue while two fingers slid into her, curling. She was soaked, clenching, already close. I ate her like I had been starving for a year right along with her, messy and loud, my chin wet, my tongue fucking into her and then flattening over her clit in relentless strokes.

“Henrik—oh fuck—don’t stop—”

Her thighs clamped around my head. I sucked harder, pumped my fingers, and she shattered, a raw, shaking orgasm that flooded my mouth. I kept licking through it until she yanked my hair and pulled me up.

She slid off the chair onto her knees in front of me, shoved my jeans down, and took my cock into her mouth in one hungry swallow. Heat, wet, the back of her throat. She gagged, pulled off with a string of spit, and went down again, sucking sloppy and deep, one hand stroking what she couldn’t fit, the other cupping my balls.

“Fuck, Paulina—”

She moaned around me, the vibration running up my spine. Saliva ran down my shaft. She bobbed faster, eyes watering, taking me into her throat until her nose pressed my stomach, then pulling back to lick the head like she was starving. I held her hair but didn’t push. She set the pace, and the pace was filthy.

When I felt the warning heat at the base of my cock I pulled her off. “Bed. Now. I want to fuck you all night, not finish in your mouth yet.”

We barely made it to the bedroom. The sundress came off over her head. I stripped the rest of the way. Paulina climbed onto the mattress on all fours, looked back over her shoulder, and reached between her legs to spread herself open.

“I need it inside me. Please. I’ve needed this for a year.”

I knelt behind her, rubbed the head of my cock through her wet folds, and pushed in. She was tight and scalding, gripping me inch by inch until I was buried to the hilt. We both groaned. I held still for a second, feeling her pulse around me, then I started to fuck her in long, deep strokes that slapped my hips against her ass.

She shoved back to meet me. I grabbed her hips and pounded her, the bed creaking, her tits swinging. The wet sound of it filled the room. I reached around and found her clit, rubbing in time with my thrusts, and she came again, clenching so hard I had to grit my teeth not to follow her.

I pulled out, lay on my back, and she swung a leg over me, facing away, reverse-cowgirl, and sank down on my cock with a broken moan. The view of her ass spreading as she took me, the way her pussy stretched around my shaft, nearly ended me. She rode me hard, bouncing, then grinding, her hands on my thighs. I gripped her hips and thrust up into her, watching myself disappear.

“Talia was right,” she gasped. “You feel so fucking good. Fill me. I want you to fill me.”

She came again with a cry, spasming, and I held her down on my cock until it passed. Then I sat up, wrapped an arm around her waist, and kept fucking up into her until she was shaking and laughing and begging for a second.

We switched. I put her on her back, hooked her legs over my shoulders, and drove into her in deep missionary, so deep she gasped every time I bottomed out. Our faces were inches apart. We locked eyes. I could see every flicker of pleasure, every time she bit her lip, every time her mouth fell open.

“Look at me,” I said. “I want you to see me when I come in you.”

“Yes. Yes. Do it. I want it. I’ve wanted it since she said I could have you.”

I fucked her through another orgasm, her nails in my back, her pussy milking me, and then I let go, burying myself and pulsing, flooding her in thick spurts. She moaned at the heat of it, rolling her hips to take every drop.

We didn’t stop. After a few minutes of kissing, lazy and filthy, my cock stirred again inside her. I pulled out, watched my cum leak from her, then pushed back in and fucked her through the slick mess, slower this time, grinding against her clit. She came on me again, quieter, shuddering.

Later I took her from behind against the dresser, her palms flat on the wood, my hand in her hair, her ass slapping back against me. After that she sucked me clean, then I ate her until she was sobbing with a fourth orgasm, then I put her on her side and slid in from behind, spooning her, one hand on her breast, the other on her clit, fucking her in lazy, deep strokes until we both came again, messy and overlapping.

The night blurred into more. Kitchen counter at two in the morning, her legs around my waist. Shower against the tile, hot water and her mouth on my neck. Back in bed, her on top facing me this time, riding slow, breasts in my hands, our foreheads together. I filled her again. She kept going until she came with a whimper, then collapsed on my chest.

Every round was wanted. Every time I asked, she said yes. Every time she pulled me closer, I went. Talia’s blessing sat in the room like a third presence, not watching, just allowing, and we used every inch of that permission.

Toward dawn the light went gray at the edges of the curtains. We were both wrecked, sweaty, the sheets ruined. Paulina straddled me one last time, slow, grinding rather than bouncing, my hands on her hips, her hands on my chest. We were too sensitive and too hungry at once. She rolled her hips in small circles, my cock still thick inside her, and we watched each other.

“I’m going to come again,” she whispered. “Come with me. Last one for now.”

I gripped her tighter and thrust up to meet her grind. The pleasure built low and heavy. When it broke it was long and shaking, her inner walls fluttering, me pulsing into her one more time, both of us gasping through it with our mouths open against each other’s.

She collapsed onto me. I held her. We were a mess of sweat and cum and the smell of sex. She kissed me, tender now, slow, and I kissed her back.

“Whenever Talia says yes,” Paulina murmured against my mouth. “Whenever I need this. That’s the deal.”

“That’s the deal,” I said.

She smiled, already thinking. I could see it in her eyes, the next weekend already taking shape, another trip Talia might take, another night Paulina would walk through that door in nothing but a dress and a hunger she no longer had to hide. She kissed me again, deeper, and I knew she was already scheming the next time.