@CoastalRat,
I second that. (Good morning, CoastalRat).
Anger about having sex is not only not romantic, it should make you wonder about everything in your relationship. Is he frustrated and angry if you don't call back immediately, and things like that? Then imagine what life would be like if you were married. Not so nice, eh?
The good news is that you are not married. And the better news is that you do not have to do this.
If you lose him over this, he is not so much of a prize to begin with.
There are far worse things than not having a boyfriend. Being pressured into sex when you're not ready for it, by someone who does not respect your feelings in that area, and gets angry with you for wanting something else - yeah, that's one of the things that's worse.