We spent god knows how long just afterglowing before either of us spoke.

“I’ve never been turned on like that before,” Kat whispered. I was inclined to agree. “At first I thought the whole thing was silly, staying in just the ropes. I was so embarrassed to walk around with them on outside the bedroom, and when we weren’t just about to have Sex. But then I felt your eyes on me and…”

As she spoke, she’d spread her legs and started idly playing with the engorged lips of her Pussy. Comingled juices dripped in creamy white dollops between her fingers. It didn’t quite seem to be Masturbation in the ordinary way, just a casual fidget in a place that felt good to her. I thought what the world record was for time taken between a hard cum and a new erection, because I probably had a real shot it if she kept going like this.

“…it felt so fucking good,” she continued. “I never imagined it could be so Hot just to be looked at. And to be naked where it feels like I shouldn’t be.”

“You’re not naked, you’re wearing the ropes,” I pointed out.

She looked down over her body, inviting me to follow the path of her eyes over the gorgeous tits, heaving with every breath and still showing red finger marks, still tipped by nipples hard enough to cut glass. Below, so much creamy midsection skin, prickled with sweat where it showed between the harness. And then, the dark wedge of bush, all mussed up by the flurry of motion in the area, and the soft pinkness being kneaded between her fingers. Long, firm legs led in two different directions, splayed aside with no remaining shame for the private places exposed completely. Yeah, not naked at all. Technically clothed, if you really stretched the term, but not at all covered.

“Plus,” I added, “it’s our apartment. We can be naked — or roped — wherever and whenever we want.”

“I wouldn’t have thought there was much point in that, when we weren’t about to have fun. I’m going to have to rethink that. It’s like we weren’t being sexy, but we were, somehow. I was seeing and feeling all my bits move around in ways they don’t usually get to without at least having some undies around them. I bet you saw some new angles that don’t happen in bed as well.”

“I sure did.” I tried not to drool at the memories. “I think what made it work so well was the contradictions. There’s all these things we get told we’re not meant to share. Boobs. Pussies. Dicks. Society says they absolutely have to be private and it’s a huge deal if people know what those things look like. From the moment you hit puberty, they’re only meant for you and one lover at a time, and only when you’re in an intimate area like a bedroom or a bathroom. And it all goes double for when they’re aroused. And I know it’s not like we went out in public or anything, but we still took all those taboo bits and flaunted them to each other, all turned on, but not in the socially mandated spaces at the socially mandated time. We were showing off everything no one’s meant to see, and we acted like it was nothing.”

She laughed at my philosophising. “Dude, you’re gonna flip your shit when you learn about nudists.”

“Hey, maybe I’m overthinking it a little, but it can’t be that far off. I felt the same way you did, walking around with my cock out, having you always wiggle yourself at me to make sure it stayed hard. I liked that you were looking too, by the way.” I started gently stroking myself, back to about three-quarter mast by now. “A girl should be able to give as good as she gets in the perving department.”

Kat gave me a helping hand, rubbing the mix of cum and grool on her fingers across my tip while I worked on the shaft. “I know you Love attention,” she teased, “but I couldn’t help it with a dick like this. We should do more of this. Maybe try…” she breathed, obviously self-conscious about escalating the game into new territory “…something like a nude beach sometime.”

My heart skipped a beat. I never wondered Katie could be so into the same exhibitionist/voyeur stuff as I am, let alone to the point of pitching public nudity herself. “I’ve fantasised about that kind of thing before, how all your skin would look soaking wet and lit up by the sun. But my understanding’s that real nudists don’t act like the ones in the Literotica stories. They don’t appreciate people walking around hard and wet, and they certainly don’t want to see any fucking. Stupid bastards don’t want it to be a Sex thing.”

“And you want a Sex thing, naughty boy?”

“I would fucking Love a Sex thing.” We were nuzzling each other by now, soft neck and collar-area kisses, Hot breath tickling, her wanking me in earnest while I took a boob in hand and entertained myself spiralling my fingertip inward around the areola, then gently twisting and tugging the nipple, making her gasp. “I want to walk around totally naked and completely hard and I want…” I hesitated at sharing the fantasy “…all the cute nude girls there to be able to see how fuck-ready my cock is and think about what they could do with it while I go to you, all naked and spread-legs and wet and fuck you in every way I can think of and every hole you’ve got without stopping for a second to think about where we are or who might see.”

“And do the cute nudie girls all clap when you cum?” Her tone seemed to have gotten a little harder at the mention of other girls, but I’d know by now if I’d really crossed a line.

“Only when I’m feeling particularly self-indulgent. You can show off to whatever naked beach guys are your type too, I guess.”

“How generous of you. Not going to get jealous they can see all those precious secret spots of mine that’ve been only yours for so long?”

That was a fair point, I probably would get jealous. “Nah, it’s only fair,” I answered. We could deal with that if it we ever actually got the chance to make this a reality. For now, it was just a hypothetical.

“Damn right it’s only fair,” she said and kissed my mouth. It couldn’t have been more than a few minutes, but we were already warming up again.

“I can’t believe I’ve got all day to enjoy you like this,” I said, breaking off the kiss and moving my head to her chest. I ran my tongue up and down the full arc of a breast, deliberately avoiding the nipple for as long as I could help it to create anticipation. She was shuddering by the time I took the firm nub into my mouth and started to suck, lick and nibble.

A small distraction: her phone, left on the arm of the couch due to an obvious lack of pockets, buzzed and flashed. She cocked her head to the side to skim the notification, running her hands through my hair as she did it.

“Ah, fuck,” she said.

“What’s wrong?”

“We have to cut the fun a little short, babe. Sarah’s in the area. She wants to stop in and drop off that game she borrowed.”

“Tell her we’re out,” I said, punctuating the wondered with a quick suck on the other tit. “Or busy.”

“I want my game back. She’s had it for months now. Come on, we can pick right back up after she leaves.”

Katie slipped out from under me and stood up. She stretched herself a little, now completely Free of any instinct to cover or hide herself. Still lying down, I was at eye level with her wet cunt. It was mostly an innie, with a little knot of outward labia I wondered added a great bit of visual flair to the slit. Her clit was visible at the front too, begging to be played with. She gave her hips a little sway, revelling in the attention.

“Come on, perv,” she said. “You have to change those shorts too.”

I looked down. Having never fully undressed, the front of my pants had spent the whole session right in the splash zone, and was now shining with dried fluids. There would be no explaining that away if Sarah saw it.

But then I wondered about Katie’s best friend, and their history together, and what I knew of their relationship. I knew that through uni they’d had a mutually bi-curious phase that had resulted in a lot of making out at parties but little else. Katie regretted on some level not taking the chance to properly explore her sexuality in a more private setting better suited to introspecting on her identity. She said she’d wondered early on in our relationship about asking for an open relationship just for Sarah, just to try, but had decided it wasn’t fair on me to ask. I knew that as close female friends often did, they would change in the same room and were pretty casual about hopping in and out of showers when they were getting ready for a night out (something about that sort of openness also really triggered the casual nudity thing I’d monologued about before). And I knew that Sarah had a wild side that had led her into hookups, threesomes, kink and polyamorous relationships of all kinds in the past, though she was single now.

Basically, I saw an opportunity. And despite having already pushed my luck pretty damn far today, I decided to shoot for it.

I balled up all my courage and said, “you promised me you’d wear what I laid out all day. It’s still the middle of the afternoon, so you can just stay like that.”

“You’re bad,” she scolded me. “Don’t you think we’ve fulfilled enough of your jerk-off fantasies for one day? What’s your game plan, perv?”

“No plan,” I lied, “I just want to see you stay true to your word. That means remembering that you’re fully dressed with just the ropes I laid out for you.” She planted her hands on her hips and took on a stubborn power stance, pouting down at me. The motion made her breasts jiggle. The open-leg stance gave me a divine view I didn’t let go to waste. I spoke again before she could rebut me. “What’s the problem? She’s seen you naked before, right? The way you girls get changed and whatever.”

Katie turned pink from head to toe. I seemed to have caught her a little off-guard, because she pulled her legs in a little, and her hands started to move subconsciously in front of her most vulnerable zones. “I mean, come on, it’s not like that. A little flash of like literally one boob or just Ass while we’re getting dressed isn’t the same thing as being in a full bondage getup with my boobs and Pussy literally all the way fucking out! She’ll know it’s a Sex thing!”

I scoffed. “She’s a big girl. An Adult woman, even. She knows what grown-ups in relationships do when they’re alone in their own homes. The way you guys act, I’d be shocked if you hadn’t shared a few intimate details with her already.”

“It’s not the same!”

“You weren’t gonna share with her the new way we spiced up our Sex life?” I asked. “And you think when you do she isn’t gonna get all fake flirty with you and ask why you didn’t have it on when she came over? I know she teases you.”

“You’ve got some fucked up male assumptions about how female friendships work,” she said. But she hadn’t actually denied it. Maybe not all women shared with their friends when the Sex with their boyfriend was good or bad and flirted in an only-joking-unless-you’re-into-it way and stole glances of tits and Ass while they got changed, but these two certainly did. I’m no Sherlock Holmes, but I listened, I watched and I paid attention. It occurred to me that I might be a hypocrite — that I’d be furiously jealous if my girlfriend had that sort of almost-a-thing-but-not-quite relationship with a male friend, that I was only okay with it because the idea of Katie and Sarah doing Hot bisexual things with each other turned me on. I did the only thing I could when confronted with such a deep personal contradiction: I made peace with the fact I was self-serving pervert and went on with my life.

I could see, in the time I’d spent introspecting, that Katie had wondered it over too. The movement was slight, but I was pretty sure the hand that had started covering her crotch was now brushing against her clit.

“Fine,” she said, breathing deep. “We’ll keep your little game going. I’ll let her know.” She started tapping away on her phone.

“You don’t have to do that. Just act like everything’s normal when you let her in. Imagine the look on her face when you’re just going around like it’s nothing but she’s finally getting more than a change room glance, like we know she wants.”

Katie bit her lip. “You’re just imaging the look on your dick. Besides, this is still a Sex game. Bringing her in makes her part of it, even when it’s just wearing our outfits in front of her. She’ll know we’re getting off on it and she might not want to be part of that. None of whatever fucked up thing you think comes of this is happening without consent.”

Ugh, how’s that for a reality check? She was right though, not making our longtime friend uncomfortable had to come leagues and leagues ahead of what made my dick twitch. Real relationships couldn’t be treated the same as porny fantasies. And hey, I was still doing pretty fucking well for myself this afternoon.

The phone buzzed again and Katie sighed. I frowned, expecting bad news.

“She’s cool with it,” my girlfriend confirmed. “Enthusiastically cool with it.”

Aha. She was nervous, not disappointed.

“That’s great,” I said. “I’m gonna find those clean shorts.”

She grabbed my cock as I tried to move past her to the bedroom. “Ah-ah. We said that as long as I’m wearing this for you, you’re showing yourself to me, too. Neither of us is getting changed.”

Oh. Oh my god. Jesus fucking christ. It was one thing for me to be dick out in front of Katie, for obvious reasons. It was one thing for her to be Pussy out with Sarah, with their history. It was another entirely between me and Sarah, who’d never had any sexual contact or seen body parts that a swimsuit would cover. There would be no hiding myself from her, not when the scenario inevitably made me hard. And it would be totally unequal — she’d be seeing the most intimate part of me, but I wasn’t gonna see any of her (unless I really was the luckiest man alive) and somehow that only enhanced it all for me. The rules say that if you are going to distribute your private bits, you’re doing it with someone who also shares theirs with you. Even in the nudist loophole, everyone was equally exposed and if there was ogling, it could be mutual. There was something even more taboo and therefore even more arousing about flaunting it all in front of someone who’d be giving nothing back.