She is, but her fiancé has a condition, one you're more than happy to fill

You spend the evening filling May on your Motherly adventures while planning out the best way to approach your Sister. When out of the blue you get an incoming vid call from the woman herself. You take a moment to compose yourself and answer the call, opting to only do voice, in case your half-sister wasn't quite drunk enough to not recognise your holographic projection.

"Hey, sis, long time no speak," You say in a cheerful tone.

"No this isn't Leslie," A stern feminine voice replies.

"Ok, hello stranger who's taken my Sister's holo terminal, first time no speak," You reply in a joking tone.

"Right, I suppose I should introduce myself," The stern voice says with a sigh. "My name is Mary and I'm your sister's fiance," Mary states, almost business-like.

"Well good to meet you, Mary," You reply, suddenly not liking the direction this call was likely going. "I'm actually planetside because our Mom told me about the wedding, but it was meant to be a surprise," You reply with a nervous laugh.

"Really?" Mary replies in a tone of intrigue. "Well, then there might still be a wedding after all," Mary muses aloud.

"Come again?" You reply, trying to sound surprised. "I thought our Mom secured the last minute venue," You add trying to sound confused.

"She did," Mary replies. "However, Leslie got a little too carefree with her bachelorette party," Mary replies, barely concealing the sound of contempt in her voice.

"My little sis?" You reply. "Leslie?" You add. "But she was the goody goody of us both, what did she do, get so drunk that she left a tip that wasn't big enough and feels inconsolable about it all?" You add in disbelief.

"Yes, well she had some friends I didn't like with her, and I'd rather not say what happened," Mary says, her tone sounding cold and upset.

"You can't not tell me what she did," You say flatly, "Not if it's bad enough to possibly ruin the wedding I hauled ass from several sectors to get here in time for," You add.

"It's rather embarrassing for me to admit to," Mary replies sounding uncomfortable. You leave a long pause, letting Mary know she wasn't getting out of it. "She had sex with a stripper," Mary finally admits with a heavy sigh.

"Oh shit, I'll have to ask her how, because every time I've tried, they've all said 'I'm sorry ma'am this is a no touching establishment'." You reply, which wasn't true at all, but judging of what you had heard of Mary and gather from your own brief conversation, you grant that she hasn't even dreamed of setting foot in a strip club.

"Is it really that much of a commonality?" Mary asks, sounding slightly dejected.

"It depends on the people, friends they keep and how drunk they are," You reply honestly. "I'm guessing you didn't think Leslie would be that sort of person?" You enquire.

"No, she always seemed happy enough with me, she's never had to ask me for more sex," Mary replies a reply that paints a telling picture of your Sister's bride to be. "She did have some requests that I wasn't comfortable with," Mary adds hesitantly as if trying to piece together the reason herself.

"Ah, I think I get it now," You reply. "So I guess the important question is, why did you call me?" You ask with a smile.

"Well, when I found out I was furious with Leslie, we argued and cried and screamed," Mary begins to list, before sighing heavily. "Long story short is I'm not sure if we're done or not," Mary answers. "Part of me wants to forgive Leslie, believe her promise that it didn't mean anything," She adds.

"Right, still not sure where I come into all this," You add.

"Well, when we were arguing, Leslie made me an offer, a free pass as it were," Mary explains. "To sleep with anyone I choose, no questions, no complaints," Mary adds.

"Oh wow, and that's why you called me," You reply shaking your head. "You want to fuck her Sister and see how she feels," You reply.

"I'm sorry, this was a bad idea," Mary replies.

"No, it's fine I'll do it," You reply.

"You will?" Mary asks sounding shocked. "We wouldn't have to go all the way, I just want to go far enough for Leslie to feel as hurt as I did," Mary quickly adds.

You smile to yourself as you consider your good fortune for a moment before a nagging sensation begins to eat at you, but maybe you can still work this to your advantage. You could still work it into your plan, plus perhaps you might be able to gain some valuable insight that will help you with your eventual confrontation with your half-sister.

"Listen, Mary, if it'll help Leslie and you're not doing this just to get back at her, I'll go along with it," You reply after pausing the appropriate amount of time you reckon someone in this insane situation should.

From here Mary breaks down her plan, which is heavy on details and laid out to a meticulous level, which you politely listen to until Mary's done before you suggest a slightly more simplistic version that'll you'd actually be able to remember. The idea was the same as Mary's which is why she agrees to it, after more than a little pressing to try and get things more to her way.

You'd turn up to pick up Mary from the hotel sweet, your Sister would be out with her bridal party to give you both the evening. You'll go out to a meal together, get to know one and another, before heading back to the hotel to seal the deal. Leslie would be back in the hotel where she would be **** to listen to her fiance being ravaged. In Mary's version of the plan she expects this to be acted out, however in your version, you hope to have brought her round to method acting it out.

"And you're sure this won't make things worse between you and my Sister?" You say, feeling fairly confident Mary was the type of person who goes through with an idea once she sets her mind to something.

"No, but equally it's our best chance, a mistake for a mistake, we'll be equal and can continue," Mary replies in a resolved tone. "Besides, we won't actually be committing any serious infidelity, just mimicking it," Mary adds.

"Not afraid, you might get swept up in my dashing charms?" You ask in a teasing manner.

"We'll see," Mary replies in a tone dangerously close to being flirtatious.

You terminate the call and lie back on the bed, a smile spreading across your full lips as you consider how best to help someone prim and propper as Mary loosen up. A good deal of **** should help, but you even if you do strike out, you're hoping to needle enough intimate information about Leslie from her Fiance to help your own goals. If you were lucky, you might be able to breed Mary and convince the Brides to be to keep them both, so they can experience the miracle of life together.

Many hours later you find yourself waiting in the lobby in a tight red dress that hugs your frame and accentuates your chest in a very pleasing manner, you may even keep the thing for special occasions where the dress uniform won't quite cut it. You have to admit, it feels somewhat strange being out of the comfortably familiar clothes of your profession, your wrist feeling weirdly light as your usual wrist-mounted holo device is tucked away in a small matching purse you're clutching. You even had your hair cut, nothing drastic, but enough to show to Mary that you were making an effort. One of your few concessions to her plan over yours. Although when you see Mary, you're glad that you did, otherwise you'd have looked a little out of place beside her.

Mary steps out of the elevator, her black dress clinging to her curvy form, proudly displaying the assets, two large boobs each looking to be almost as big as your head. Her long soft chocolate brown hair seemingly glides as Mary scans the room looking for you. Her hazel eyes fix on you for a moment, narrowing as she regards you before Mary gives you a nod and a slight polite smile spreads across her lips.

"Mary, you look incredible," You say with a smile.

"Thank you, your appearance is also satisfactory," Mary replies with a nervous smile.

You gesture towards the restaurant area of the hotel and walk beside Mary, stealing more than your fair share of glances at Mary's body when you believe she's not noticing. Although after one such surreptitious glance your eyes travel back up to meet Mary's gaze to let you know that you've been busted. Your smile and assure her, that you were just giving her the full experience, and that you wouldn't be able to keep your eyes of a partner so radiant, which gets a blush from Mary.

At first, the meal is a little awkward, unsurprising given that Mary isn't the best at social interaction, which compounded with the reason why you were here, making it a little difficult to get the conversation flowing. Fortunately, with your charm, you eventually get through that tough exterior of Marys and get her talking about herself, what she does, where she grew up, her family. Although any questions you ask about your Sister even indirectly such as how Mary and she met, get ignored or avoided.

Eventually, the meal comes to an end, with you none the wiser about anything that could help with Leslie, although given the way Mary can't take her eyes off you, your certain you've at least made some headway on her.

"Thank you, Claire, that was a lot more fun than I expected," Mary says with a warm smile. "Shall we head back to the room and finalise this?" Mary asks with a nervous smile.

"Nah, not quite yet," You reply with a smile, gesturing to a fancy looking bar in the hotel lobby.

"Oh, Claire, I don't know, it looks awfully expensive, and you already treated me to dinner," Mary replies with a smile.

"No, I insist, works been good and it's been a while since I had someone to share it with," You say confidently, "come on, it'll be my treat," You add with a grin.

"Ok, but not too many," Mary warns, before following you to the bar, where you occupy a booth and are pleased when Mary opts to sit beside you rather than across from you.

You share a few drinks with Mary, slowly but surely helping her unwind enough until finally, she stops being so evasive about Leslie, in fact, Mary starts giving you answers to all the questions she'd ducked in one go. From the sweet but relatively uninspiring way that Mary met Leslie, to the more sordid details about what Leslie asked for in the bedroom.

"Now the costumes and role play I could deal with, even some of the toys," Mary whispers into your ear, her hot breath tickling the tiny hairs on your neck and sending signals to your body. The sort that might leave a stain on your dress if you kept this up for too long, your underwear doing a valiant effort to tame your throbbing beast spoiling the fit of your dress, but even it would have limits. "But the threesomes just felt too messy," Mary adds shaking her head.

"Messy?" You enquire softly.

"Yeah, we couldn't have a complete stranger in our bed, and the idea of someone we knew and would have to see regularly, well that wouldn't work," Mary explains with a sigh.

"So the idea wasn't the issue, just the whom?" You ask.

"Exactly, but would Leslie listen to me?" Mary complains draining her glass and leaning back in the seat. "God it was the argument about gene mods all over again," Mary adds refilling her glass from the almost empty bottle.

"Gene mods?" You enquire with an arched eyebrow.

"Some old fantasy of Leslie's but she wouldn't tell me why, and my work wouldn't sign off on the enhancements, was too expensive to go alone," Mary explains with a sigh.

"So again, not that you were against the idea, just circumstances?" You ask.

"Exactly!" Mary says in an exasperated fashion. "You get it, why can't Leslie?" Mary adds shaking her head.

"Well, did you tell her you wanted to, but had a few issues to sort first, or just tell her why you couldn't?" You enquire, with a wry smile.

Mary turns and regards you, her hazel eyes a little unfocused from the drink, but you watch her normally analytic mind process your words before you almost see the proverbial single credit drop. "Ohhhhh!" Mary says shaking her head. "Oh, I'm an idiot," Mary adds starting to laugh. "I thought she'd just get it," She adds.

"Not everyone thinks as you do, Mary," You reply with a soft laugh.

"Oh god, this explains so much," Mary says putting her head in her hands, while you rub her back as Mary giggles into her lap. "Damn, Claire, I need your eyes," Mary says with a smile.

"Well you can't have them, I need these for flying," You reply leaning away from Mary almost defensively.

"No, I mean, I need to see things your way, not always but just from time to time," Mary explains.

"Yeah, a different perspective can't hurt from time to time," You reply with a smile.

"So is this why Leslie got so mad at me, for getting mad at her for having sex with that stripper?" Mary asks softly.

"Ah, I guess a little bit," You reply. "I think there's a lot more to unpack about that, but if it helps you see past it enough to tell if you care enough to still marry my Sister?" You offer.

"Sort of?" Mary replies thoughtfully, "Can you maybe summarise it in your simpler way of thinking about things," Mary asks, completely oblivious about the insulting nature of her words.

"Sure," You reply shaking your head. "Imagine the stripper is like the threesome you didn't get to have," You begin.

"Threesome, but I wasn't there?" Mary replies.

"Now, bear with me on this," You reply with a smile. "If you had been there, and also joined in, then it would have been that threesome, and you were ok with the idea itself, just the complications of the who," You explain.

"I think I get it, sort of?"Mary replies

"Now for arguments sakes, let's say I was that stripper," You continue. "Now at the minute, I've only slept with Leslie," You reply.

"She's your sister, you perv," Mary laughs, poking you playfully in the side.

"Whatever, I'm a perv, it's not relevant," You reply shaking your head. "Now, when we go upstairs and I sleep with you, then I've done you both, so like a deconstructed threesome." You offer hopefully waiting to see how Mary reacts to the suggestion of you both actually getting in on, rather than just pretending.

"I think I get it," Mary replies with some confidence. "On some level, I'm ok with sharing Leslie with someone, as long as she really only care for me," Mary says thoughtfully.

"She did fight to keep the wedding on and offer you my delightful self as a way of saying how sorry she is," You reply in a playful tone, while you gently caress a strand of Mary's brunette hair from one of her eyes.

"Alright then, what are we waiting for then," Mary yells slamming her hand on the table, making the glasses rattle. "For the good of my marriage, I need you to take me up to my room and fuck me like you did your Sister," Mary adds nodding emphatically.

While you could have done without the announcement, a few nervous smiles and playful shrugs, and whatever universal signals for 'Yes they're crazy, but have you looked at them', which gets you a few knowing nods from a few patrons as you lead Mary towards the elevators. You make a mental note to give May a big thank you for letting you use her hospitality account to gain access to the good stuff, that gave Mary the little nudge to finally unwind. She might still carry the stick up her butt, but your throbbing ambitions have a different hole in mind.

Mary presses her soft lips to yours in the elevator, her tongue eagerly exploring your mouth and mingling with your own as you happily return the kiss. The pair of you kissing like a pair of horny teens, not even breaking the kiss to stumble your way out into the hallway until Mary has to stop and unlock the door. You don't have much chance to look around to see any signs of your Sister, Leslie before Mary drags you into the bedroom and then on top of her on the large plush bed.

"Claire!" Mary gasps in excitement as she finally feels your stiff surprise as your grind your body against hers.

"Leslie didn't tell you?" You tease with a smile.

"No," Mary replies, bitting down on her bottom lip as you lean back and pull your dress over your head, revealing the slightly sticky special underwear to keep your cock at bay.

"Want to stop?" You ask with a confident smirk and you pull at one of the strings keeping your underwear from bursting under the immense pressure of your big throbbing length,

"No, I want you even more now," Mary hisses.

You smile and watch Mary's hazel eyes go wide in delight as you undo the string and your underwear is catapulted across the room.