I'm 17. I've had sex with one guy, who I've been with for two years (he's 20 if it matters). We waited a while to have sex and then we did it very often. But for probably the past 9months to a year I've just not really been in a mood for sex. I mean don't get me wrong sometimes I'm in a, "do me now" mood but then after a little bit I'm just not into it anymore. It's not that it doesn't feel good, because it's great. And he's not doing anything that "turns me off". I just don't know what to do. Someone please help!!