Bisexuality Support Group
Bisexuality is a sexual orientation which refers to the aesthetic, romantic, and/or sexual attraction of individuals to other individuals of both their own and the opposite gender or sex. Most bisexuals are not equally attracted to men and women, and may even shift between states of finding either sex exclusively attractive over the course of time.
I disagree with what he said about how if you don't invite him to join you and the woman, it's cheating. I think cheating is when someone in a monogomous couple fools around SECRETLY with someone else.
Since in this case, your guy would know what you were doing, you wouldn't be sneaking around, so I don't see it as cheating.
It sounds to me like he just wants to be in on the action, and I agree with streak that 3-somes can be complicated. I've never done a 3-some myself, but it just seems like one of those things that might perhaps most often be more exciting as a fantasy than as a reality.
Ave