You won't want to hear this advice, but my gut response is, "No." The relationship began with a common desire for an unusual sexual relationship. You say yourself that it got to be more than you felt comfortable with. But you know he does have these tendencies and that's why he got involved with you in the first place. I don't think he will ever want to have a typical relationship, in my opinion.

I say, "Move on. And learn a lesson." You don't need to be degraded. And I agree, there are other factors that are going against the relationship, too. Like the age difference. It does matter. As we get older, we are even less likely to change, for one thing. I suspect, even if he denies it, that he likes young women because he does feel more powerful than them. One day I wouldn't be surprised if he's not brought up on rape charges. Why would a woman allow any man to treat her that way? I suggest you go into therapy to work some more on your self-esteem issues. You deserve better.