My wife's sister wants to come to swinger party with me

Once a month. me and my wife go to a swingers group for sex with other couples and my wife’s younger sister found out and wants me to take her along instead of my wife, to see what it’s like. My wife is cool with that as she can’t make the next one but she’d rather I didn’t have sex with her sister and has asked me to maybe let another guy have her. Usually no rules apply and anything goes as long as there is consent.
The main problem that I have with that is that she’s 20 yo, she’s cute as hell and has the sweetest body and I know that once there, when she’s stripped naked and laying with the other girls, I won’t be able to resist fucking her . I have fantasized about fucking her so many times and She has come on to me in the past so I know she’ll be more than willing.
What shall I do?

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Comments ( 7 ) Sort: best | oldest
  • i want to konw do you do creampies in swingers parties?

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  • Well what?

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  • She moved in with me and I told her it was a nudist household. We went nude together!

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  • Got her to run around naked 24/7 for a while. Never even got to touch her though.

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  • An older sister that's a real bitch and an ex-sil that wouldn't play with me.

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  • Take her! Fuck her! Have a threesome with your wife! Plenty of cum to go around. Don't miss out!

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  • We invited her over once for a wine night and my wife encouraged her to flirt with me jokingly. Just dancing sexy with me, that sort of thing. We were all pretty well merry on the wine. Then later as she got ready to go, she slipped her arms up around my neck and kissed me full on the lips. I kissed her back and she only backed off when my wife joked that she wanted her man back.

    The look that she gave me when we parted told me that I could have whenever i wanted. It was that sort of look!

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