I had a very similar situation with my ex bf earlier this year. When he brought it up, we agreed to work on it and give each other more space, communicate better, etc. But in the back of my mind, it would still bother me that he wasn't 100% in it like I was. I'd start to worry that any second he might break up with me. About a month later, I ended up breaking up with him because I couldn't deal with his uncertainty anymore.

Honestly, it was incredibly hard because we loved each other and wanted it to work out. But it was causing me to have low self-esteem and self-doubt, so looking back I'm glad I did it. We tried to stay friends, which obviously didn't work. But, ever since we cut off contact a few weeks ago, I've been feeling so much better about myself! I'm focusing on myself and I now realize that my next relationship should be with someone who really knows I'm the one for them and is crazy about me.

I'd say break it off with him even if it's hard, because the only way to get clarity in this kind of situation is to get distance. You're worth more than he realizes! Maybe he'll see what you're worth once you're gone from his life, or maybe he didn't deserve you to begin with.