My boyfriend is extremely sexually open. I believe that if I am with someone, that is because we are a we, not everyone else included. I am completely monogamous as long as I am bound to that person. In his past, my boyfriend has had sex in front of people, in the same room as a family member, some of the strangest things (to me). I have told him several times that I am uncomfortable with the idea of sharing him with another woman. He doesn't want a threesome to see two girls get it on, no, he wants to have sex with two girls (which seems a bit selfish and insulting to me). He will not, under any circumstances drop the subject. He thinks that I will be more comfortable with my sexuality as our relationship progresses. The more he pushes me, the more upset I get. We have been dating for almost two years now, and I can't decide what to do. If any of you have any thoughts, I would love to hear from you.