I'm fine if other people are doing it, everyone do what they please as far as i'm concerned. Personally, i'm with Chez on this one. I never will have a threesome. I'm a believer in sex must be something special in a relationship. I don't agree with one-night stands or f-buddies, threesomes, orgies etc. That, and I can't imagine it being the most comfortable thing in the world :/