wait - and one last thing -- it doesn't sound to me as though your sex drive is *low*. Yours sounds normal, for a female your age who has been in the relationship for a while. His drive sounds as though his hormones are raging, which isn't his fault, but pressuring you IS something he can and should control.

Honestly, if he's not willing to lay off on the pressure, then he's putting the relationship at risk because ONE of you is going to build up resentment toward the other to the point of no return. He needs to understand that no means no.