My boyfriend and I have have been tossing around the idea of having a threesome. I stated a couple months ago that it was something I fantasized about, and he of course thought it was a fantastic idea! He is willing to have a threesome with another guy if I'm willing to have one with another girl — we agreed on those terms. I picked the guy, a good friend of ours who lives out of state that we hardly see, and now that I gave him a name for the guy, he wants to choose a girl.

Here's where my problem lies. He recently named a girl he works with (that I have never liked) to be the other woman. His reasoning for choosing her is because she's had threesomes before, but now I'm starting to have second thoughts about it altogether. I feel myself getting jealous and I think it could be destructive for our relationship. How do I break it to him that I changed my mind? I feel like he may never forgive me for going back on my word.

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