Agreeing with others. He's using abuse and fear to control you, by first separating you from your friends and support network, then convincing you that you're worthless and have no other options but to accept him. This is a classic abuser strategy.

I'd bet real money that sections 1.7 and 1.8 will sound familiar to you:
Domestic violence - Wikipedia, the free encyclopedia

A man with no value himself needs an equal in order for her to stay. This guy is working pretty hard to make you feel worthless. When words stop working, can you imagine what might happen next?

And regarding the sex, even the "worst" sex is one of the top two things that happen in a day. (Joke.) The number one being waking up healthy. (Not a joke.) I'm not commenting on your sex life, I'm saying in general that if he feels the need to tear it down, it's not bad at all.