Need advice

I was in an sexually abusive relationship last fall. My current boyfriend is easily the love of my life. We finally got back together last November immediately following my break up with the guy who was sexually abusive. I told my current boyfriend that I about the relationship but didn't explain that it effected me.

The issue is that I keep rejecting my current boyfriend. I say I don't want to have sex. Or when we are sleeping I push him off and sometimes cuss at him to get off of me. I don't mean to do this and love cuddling him when I am awake. This is of course very upsetting for him. How do I say I need you to back off without making him feel like a jerk? He is really an amazing guy and I don't want him to feel unwanted.