[M4F] Taking my Fiancé/Girlfriends place (SIL/BFF)

I'm a good guy. One of the best. And I'm very proud of that fact. Im the kind of guy that women feel safe and comfortable around, and all feel welcomed when I glance my smile their way. Mothers wish their sons were like me, and gifriends wish their boyfriends were me. I’m the guy everyone would assume wakes up early and works out for hours given my strong build, works hard during my 9-5 making bonus pay, goes home with a bouquet of flowers for my partner, and never drops the grin on my face. I enjoy having this reputation, and aura - and those assumptions wouldn’t be far from the truth.

Which is why I have to keep all my natural urges as private as possible. It’s not that I spend every day thinking about what it would be like with a partner who gives as much effort to me, especially physically, but I do think about it often. It’s not that I stare at the tight asses in the gym when the beautiful women are on the stair master every workout. It’s not that I fantasy about having the perfect sexual chemistry with someone, and just once every now and then walk through the door to a beautiful woman begging for my cock wearing her sluttiest outfit… but I do pretty often.

For years now, the two of us have been building up a rapport. Youre my girlfriend’s younger sister, and we've reached the point where we tell each-other everything. Every problem. Every life event. Every little thought. And, naturally, when a man and a woman really like each other, things can tend to get a little steamy. And when steam builds, it’s bound to explode. We could both feel the tension growing, knowing we shouldn’t keep our relationship growing, but both feeling the rush and lust of being addicted to pushing the limits.

Your sister often is away for work, or some excursion with her adventurous friends. I can’t help but get lonely, and deep down feel some level of neglect. Youve been filling that void emotionally, and I can’t help but fantasize about filling your void physically.

Fairly often, I'll express my biggest frustration to you. I talk about your sister gently, just saying how much I wish she was around more - you know I get lonely… you’ve been lonely too. You’ve felt the same way, and that’s a good portion of why we’ve grown so close. You living so close is a portion too. A couple nights a week we’re at my house on the porch having a glass of wine since we’re lonely, and that’s where things really began to build up… its almost started to feel like I’ve been dating you.

What followed one wine filled evening was the hottest half-conversation, half-roleplay of our life where we both fell into a joke, turned into a story of how you’d put your sisters pencil skirt, maid of honor dress, lingerie, or other clothing item on and just take her place for a weekend when she was away. We knew we shouldn't talk like that. That it was going to change our relationship forever. But we kept going. My physical attention showed, myself unaware, as my sweatpants rose in your eyesight just enough.

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Thanks for reading. Looking for a partner to play my GF/Fiances sister. I’m excited at the idea of both cheating/risky taboo relationships, but also enjoy intimate and wholesome relationships. This is a good blend of both.

Hoping to chat a bit about our characters, and where we see this going from the end of the prompt. Ideally, jumping right into a weekend together going off our shared story time.

I’m accepting of many kinks, but some main ones here: Cheating, risks, outfits/wearing her outfits, sneaking around, risky sex, creampies, broken condoms, no birth control, intimate sex, romance, hardcore, cum

Feel free to chat!