My wife Dana has a twin named Sophie. They’re identical, with dark hair and equally great asses, but for the most part, I’ve been able to suppress any fantasies about fucking the wrong twin.

Sometimes, though, a sneaky little fantasy takes over my brain, and I imagine taking Sophie to bed rather than my wife. I guess it’s the traditional twin fantasy — a way to be monogamous and also cheat. Or maybe it feels extra filthy because of how close twins are.

Dana and Sophie do everything together. They go to plays together, read the same books, take the same cooking lessons. Sophie even married a man who looks a bit like me. Gil and I are friends, and we spend a lot of time together because of how often Sophie and Dana hang out.

The other night, we met up at Sophie and Gil’s place for a wine night. These always start with us hanging out in the kitchen, chatting about our lives, and then we usually end up either watching a movie or playing a game.

We’ve long since lost our filters around each other, and we’ve had plenty of open and honest conversations about sex, life, and love. Gil and Sophie struggle with communication, while Dana and I struggle to make time for our relationship in our busy lives. Add to that Dana’s worry about needing to have children soon, Sophie’s uncertainty about children in general, and Gil’s work anxiety, and more often than not, our wine nights turn into mini therapy sessions.

On the night in question, though, Gil and Sophie looked happier than I remembered seeing them in recent memory. They were snuggling and beaming at each other like newlyweds.

“What’s up with you?” Dana asked, diving right into it with her usual bluntness. “You look giddy.”

“Well,” Sophie said, blushing as she looked at Gil, “we’ve been working on our intimacy issues with our therapist.”

“Wonderful!” my wife said, clapping her hands. “Did you finally have an honest talk about your fantasies?”

“We did.” Gil kissed Sophie’s forehead. “And it turns out we both wanted the same thing but were afraid to ask.”

“And what’s that?” I asked, curious what sort of sexual experience could make the two of them look that blissful.

“We want to sleep with other people sometimes,” Sophie said.

I nearly spat my wine out, but Dana looked totally unsurprised. “I figured it was something like that,” she said. “It’s normal to want to spice things up a bit.”

This worried me a little, because if Sophie felt something, Dana probably felt it, too. “Do you want to spice things up?” I asked my wife, wondering if this entire time she’d been fantasizing about sleeping with other people.

She shrugged. “Sometimes, yeah. Like I said, it’s normal.”

Sophie reached across the table and covered my hand with hers. “It isn’t something to feel threatened by,” she said. “Sometimes it’s just a way of bringing a couple closer together. You can each experience the excitement of a new sexual partner, then come back to each other afterward.”

I considered the suggestion. My initial gut response had been upset jealousy, but was that even right? I loved Dana and she loved me. But we both had individual sexual fantasies we hadn’t acted on. Was acting on those any worse than thinking them if both members of the relationship were okay with what was happening?

And once I considered that, I couldn’t help the dirty train of thought that followed. As if a floodgate had been opened, illicit fantasies tumbled through my mind. Fantasies of fucking Sophie, rather than my wife. Of seeing if she made the same sounds and if she felt the same inside.

I got a boner and shifted in my seat, trying not to think about it anymore. Dana, though, had a boner-sense like a shark sensing blood in the water, and her attention went immediately to my lap. “Whoa,” she said. “Who are you thinking about fucking right now?”

There was no way I could say it. Some things were just wrong. But before I could come up with a diversion, Dana dove into the breach. “I’ll tell you what I’m thinking about,” she said. “I was just wondering if having sex with Gil would be fun.”

My jaw dropped. Gil’s eyes widened. But Sophie just laughed. “Oh my God, I was wondering the same thing!” she exclaimed. “About your husband, though, obviously. Isn’t that funny? It must be a twin thing.”

At this point, Gil and I made half-panicked eye contact. Were the twins seriously contemplating trading us like baseball cards? Should we feel bad about that? Excited? It felt like a trap, but neither of us had brought it up.

“We already swapped partners with a couple we know from Gil’s work,” Sophie said. “It was surprisingly freeing. No one’s feelings got hurt, and we all had fun.”

Dana reached over and started rubbing my cock through my slacks. “I like the idea,” she said as she worked me into a near-unbearable state. “And honestly, we’re all so close anyway. I bet it would be great.”

“Holy shit,” Gil said. “Are you guys seriously suggesting...” He trailed off when Sophie leaned in to whisper in his ear. Then his eyes shot to Dana, and I knew exactly what she’d suggested. “I mean, I’m interested if you are.”

Dana squeezed my cock through my pants, and my hips jerked up. I couldn’t stop staring at Sophie’s cleavage. She was wearing a little crucifix necklace, and for some reason I imagined coming all over it.

“Let’s do it,” Dana announced, standing up. “Gil and I will take the downstairs. You guys go upstairs.”

Before I could process what was happening, Sophie had grabbed my hand and was dragging me out of the kitchen. I followed her up the stairs with my heart hammering. It looked and felt exactly like following my wife upstairs for sex, but this was my wife’s sister. Their hair was the same length, their body types the same, but they were completely different people.

And wait, was I mad that Gil and Dana were fucking? Or was I just excited about the opportunity to fuck Sophie?

Maybe it made me a bad husband, but right now, all I wanted to do was have sex with my wife’s twin.

We reached the bedroom, and Sophie immediately turned and wrapped her arms around my neck. She kissed me hard, grinding against my erection. I held her, urging her hips into a rolling rhythm with my hands on her ass. Her perfume smelled different, like vanilla rather than orange, but otherwise, it was shockingly similar to kissing my wife in a darkened bedroom.

We tumbled into bed. Sophie wasn’t as dominant as Dana, and while Dana would have already been tearing at my clothes, Sophie rocked her hips and whimpered. “Please,” she said. “I’ve been fantasizing about this for so long. Please touch me.”

I tore off her clothes, revealing a plain pink bra and lavender underpants that Dana would never wear. They were almost virginal, with little embroidered flowers on them. And here, with Sophie nearly naked, it suddenly didn’t feel like fucking my wife at all.

She tugged at my shirt. I stripped it off, but I shoved her back to the mattress when she went for my belt. “No,” I told her. “I need to taste your pussy first.”

Dana would have laughed at being told “no,” but Sophie loved it. She wriggled out of her underwear and unclasped her bra, then spread her legs wide for me. “Please let me suck you,” she whimpered when I started rubbing a finger over her drenched pussy.

Her repeated use of “please” got me. I stripped, then climbed on top of her and turned so we could do 69. I ate her out, enjoying the little shivers that went through her as I licked up her pussy juice. Then she opened her mouth around my dick and started sucking.

This was the ultimate twin fantasy — one in which there was no misunderstanding, just her mouth on me and mine on her. Tomorrow we’d have to talk through our feelings, especially since our spouses were doing the same thing, but for now, I was happy to be between her thighs.

“I need you in me,” Sophie murmured against my dick. Again, she was much sweeter than Dana, whose bedroom demands were aggressive. I loved both styles — the woman who commanded and the woman who entreated — but it was nice to feel dominant.

I grabbed a condom from the nightstand — they even used the same brand, weird as that was — and rolled it on. Then I lifted one of Sophie’s legs onto my shoulder, spreading that vulnerable pussy open so she could take me deep. I thrusted into her, and she gasped and arched her back. She was flexible, and I was able to bend her leg far over. I started pumping, delighted at how easy it was. She was sopping-wet, and I slid in and out of her cunt with ease.

She seemed to like me going extremely deep — another difference between her and Dana — so I lifted her other leg to my shoulder, too. I bent her in half as I fucked that pretty little pussy, and she moaned and gripped the pillow. “Harder, please,” she gasped.

I obliged, slamming into her with far more force than I would have used with my wife. It was liberating in a way — a chance to seize the little pieces of the sexual experience that I usually wasn’t able to have. I could be dominant and fuck this woman deep, and she would love every second.

She reached down to rub her clit. Within a minute of that focused attention, combined with my thrusting, she orgasmed.

I could have come in her, but I didn’t want to. This moment felt monumental — I wanted to mark it. So I pushed her to her knees on the floor, tugged the condom off, and jacked off while she looked up at me eagerly. Her small hand joined mine, circling the base of my dick, and that was enough to set me off. I came, shooting hot spurts onto her chest. It dripped down her breasts and adorned the little silver crucifix around her neck.

I’d finally fucked my wife’s twin. And the best part was, this didn’t have to be the only time. The twins shared everything — including, apparently, their men.