“Stop,” I pant against the side of your mouth. “You have to stop. We have to stop. This is insane.”
I know it’s insane. Everything inside me is screaming it: my mind, my body, my heart pounding so hard I can feel it in my throat. Every warning I’ve ever had about right and wrong is ringing like an alarm I can’t silence.
And yet.
And yet.
You ignore my words and kiss me again. Your hand slides from my hip to cup my left breast, firm and heavy in your palm. I arch into your touch even though part of me is still trying to pull away. Your other hand presses against the small of my back, holding me tight, pulling my hips against yours. I feel how hard you are—thick, insistent, pressing right against me. God, you’re making me so wet. Have you fantasized about sliding into me the way I’ve fantasized about you? Have you stroked yourself thinking about my mouth on you, my breasts wrapped around you, my ass in your hands? Have you pictured pushing inside me, filling me, breaking every promise we both made years ago?
Does the thought of betraying them terrify you and turn you on in exactly the same breath, the way it does me?
Right now, the wanting is winning—by miles, by oceans. Guilt is there, but it’s distant, muffled. Later it’ll devour me whole. Right now it’s just noise in a storm.
Your tongue slips into my mouth for the first time. I freeze for a second, and I feel you hesitate, worried you’ve gone too far. All those years of stolen glances, of almosts and nevers, teetering on the edge… If I stop this now, it’s over forever. The secret part of us dies tonight. I don’t want that. So I let my tongue find yours—slow at first, then hungry—and the fear melts into something electric that makes me want to moan out loud.
Downstairs the party is still roaring—music, laughter, voices drifting up three floors through the open window. If it weren’t so loud, you might never have followed me. I felt your eyes on me as I climbed the main staircase, hips swaying more than they needed to. You pretended to head for the bathroom, then doubled back to the emergency stairs. I heard your knock, steady despite the tremor I know was in your hand.
When I opened the door, I didn’t speak. I just leaned in close enough for you to breathe in my perfume, checked the empty hallway, and stepped aside. You didn’t hesitate. You walked straight into the room, into twenty years of pent-up wanting.
That first kiss was everything and nothing—reward and ruin. You groaned into my mouth, your cock hardening instantly against my thigh. My lipstick smeared across your lips, tasting better than the wine I’d been sipping all night.
That’s when I told you to stop. And you didn’t.
I pull back again. “I can’t do this. Not to her. Or to him.”
The order of my guilt says everything, doesn’t it?
“I know,” you murmur, voice low and rough. Then your hand slips inside the front of my dress. No bra—just skin. I gasp as your warm palm covers my breast, my nipple already hard and aching for you. You roll it gently between your fingers and I gasp again, louder this time. While you kiss me, I wonder if you’re imagining how my nipples will taste, how they’ll feel under your tongue.
Your other hand finds the zipper at my back and draws it down, slow and deliberate. The sound fills the quiet room.
I break the kiss a third time. “This is so wrong,” I whisper.
“Do you want me to stop?” you ask. “Do you want me to go?”
“Yes.” But I don’t move away. I just look at you, eyes locked on yours, waiting.
You ask again, slower. “Do you want me to go?”
I don’t answer. I can’t. I’m waiting for you to choose—for both of us.
You choose. You slide the dress off my shoulders and let it pool at my feet.
You take in the sight of me: taller than your wife, fuller breasts, wider hips, skin still golden from two weeks in the Algarve. Black lace suspender belt, stockings… and nothing else. No panties. I watch your throat work as you swallow. Maybe you tell yourself it’s just fashion—no visible lines. But we both know a thong would have been invisible too. Maybe, deep down, I dressed for this. For you
You cup my breasts again, reverent, hungry. My breath catches. My heart is racing so fast you must feel it under your palms. I wet my lips as you drag your nails lightly across my skin, raising goosebumps everywhere. I shiver, bite my lip, but I don’t look away.
Your hands move lower, over the soft curve of my belly, down to the dark triangle between my legs—so much darker than my blonde hair. Your fingers slip between my thighs and find me slick, swollen. You circle my clit once and my hips jerk against you. “Oh,” I breathe, and again when you slide one finger inside me—tight, wet, effortless. I grab your face and kiss you hard, tasting wine and want as I rock against your hand.
I’m lost now. Completely surrendered. Only you can still stop this.
“Unzip yourself,” I tell you, voice shaking.
You hesitate just a second… then guide my hand to your belt. I fumble a little with the leather, but the zipper comes down easy. The sound is loud in the quiet room. I reach inside, unbutton your boxers, and wrap my fingers around you—hot, hard, throbbing. You shudder against me. I stroke you slowly, firmly, feeling you twitch in my grip.
I break the kiss, lean to your ear. “Fuck me,” I whisper. “Quickly. Before I come to my senses.”
You don’t wait. You spin me to face the wall, lift my hands and press my palms flat against the cool plaster. Downstairs, the music is faint—Bryan Ferry singing about love being the drug. Maybe not love. But this… this is addiction.
You lift yourself to me, find my entrance, and push in—slow at first, then deeper. I’m so wet you slide all the way home in one long thrust. I moan into the wall, feeling every inch of you stretch me, fill me. It’s familiar and brand-new all at once. Forbidden.
You grip my waist and start to move—hard, urgent. Your hands slide up to cup my swinging breasts, pinching my nipples just enough to make me cry out. I push back against you, meeting every thrust, chasing the edge.
You don’t ask if you can come inside me. You just do—pulling me tight, burying yourself deep as you pulse and spill. The heat of it tips me over; I come with you, clenching around you, a broken cry caught between pleasure and ruin.
We stay like that, breathing hard. I rest my cheek against the wall, watching you from the corner of my eye.
When I can speak, my voice is low, husky. “Was this meant to be just once?”
You don’t answer right away. I ease you out of me, turn, and kiss you—slow, soft, deliberate.
Then I ask again, lips brushing yours.
“Are you going to fuck me again, brother-in-law?”
You’re quiet for a heartbeat.
Then you say, “Yes.”
And you kiss me like you mean it.
