My boyfriend and I have been together for 2 years and have had alot of sex during our relationship. He lives with two other roommates and has his own room so we would do it there. But lately I never seem to be in the mood anymore and that frustrates him because I rejected him twice this week and we only ended up having sex once. When he tries to turn me on and it doesn't work he gets even more upset. I don't know what's wrong with me or what I should do. I just don't feel like it :(