Unexpected swinger

I'm a pretty open-minded man, sexually speaking. I'm 33, and I'm more keen on the casual sex and occasional dating kind of lifestyle, I've never been on a relationship that's lasted more than a few months. This has to do with the fact that I enjoy swinging, which requieres for my partner to be into that as well.
In fact, I often attend swinger parties with girls I usually meet in that circle. I was at one of those about a month ago, when I saw a guest I wouldn't have expected: my older sister.
I'm not gonna give you that "I had never thought of her that way before" shit,because that wouldn't be true. Since she was the older one and 5 years older, you should know that she was a gorgeous young lady while I was hitting puberty. I secretly jerked off thinking of her back in the day, but never thought of acting on my attraction for her. Never did until that day. Before the party's "play time", she approached me as if we were complete strangersand started chatting. She pretended to be somebody else so I could talk about myself for real. I didn't tell my partner who she was, and she was there as a "unicorn": the very rare, beautiful, single lady at a sex party. She caught me off guard but I played along... and then I got a text from her that said "It's OK". She had already manifested her interest in having sex with me that night ("I hope you don't mind ifI steal him from you tonight", she said to my partner), so I just went with it.
And so, I committed incest in a room full of strangers that night, and nobody even knew... not only that, I enjoyed it. A lot. Much more so than regular sex. I'll just come out and say that incest is the best sex I've ever had, and it was unexpectedly dirty: protection is mandatory at these parties, but when I was nearly done she asked me to cum on her face.
I was so hooked by the experience that I broke up with my partner a few days later... and have been hooking up with my sister quite often for the past month. That's when I learned she has a cum fetish: she doesn't really feel it unless you start cumming on her, or even inside her. That's what's got me equally addicted and guilty: I've cum inside of her quite a few times now. The taboo is quite a turn on, but it's got me nervous even if she claims she's on the pill: we're gonna be in serious trouble if she gets pregnant.

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2 Comments

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  • Does she do anal? Three ways?

  • OP
    She LOVES it, but she only likes it bareback so you can cum inside of her. So it's a little impractical to do it every time, but fucking her ass is quite an addictive experience.

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