I have done a 3some, me a woman, and my then husband. I really didn't care for it. I didn't like the smells, I don't find a woman to be pretty down there, I don't like the taste, the feel of female softness as opposed to male hardness was unattractive to me. It just wasn't sexually stimulating to me. Then my ex made it worse by suddenly wanting me to "pick us up a woman" constantly, going to bars and asking if I thought she'd like it, or if I thought I could pick her up, blah blah. So I decided never again.

Two guys I think I would have emtional issues, the old "how could I respect myself" or face my partner again later is still an issue for me.