In a new relationship which has been hot from the get go. The first couple of weeks we fucked liked rabbits and I had no trouble reaching orgasm 3 times in a night. Then, for the past week, I can get up, she gives me great head, we fuck and she has multiple orgasms. There is no doubt there is lust and passion... BUT, I get almost to the point of no return and it's like a snap of the fingers and the feeling is gone and I can't cum. I'll still be hard but it's like it's over. Last night we fucked and I came inside her but it wasn't anything very satisfying. Later she sucked me, she jacked me, I jacked myself (which she got off on), we fucked more, did all of that again and I couldn't cum. This morning I was at home alone and masturbated....and guess what, I couldn't cum. I'm going crazy! Anybody got any advice?