My boyfriend and I have been dating for two years. He goes in and out of phases where he doesn't want to fool around or have sex with me. He is currently in one of his phases (which usually last about 2 weeks but happen almost once every two months). What happens is that I try to talk to him about something sexual and he starts saying how he wants to be abstainant. However when we are actually together and alone, he doesn't have a problem touching me in a sexual manner. It's like he's all talk and doesn't follow through. I don't know if I'm doing something to turn him off of sex when we are just talking on the phone or whatever but then he changes his mind when we are together...? I have no idea what is going on. I don't want to pressure him to have sex with me but these phases are really random and strange. Any ideas about how I should open up the convorsation with him without sounding pushy?
P.s. He isn't very good at having serious convorsations like this (he's 18) but I need to talk to him about it.