I think you're not giving him a lot of credit. If someone left you, would you write them off forever? Why do you assume he'd be so shallow?

I think you're afraid and you're blaming him instead of taking responsibility. See, it's not that you're afraid, it's that he's moved on already, unlikely as that is.

I do leave people for good. When they are abusive to me. And not just one time either, they have to hang themselves off the moon. Did you do that? Were you abusive over a long period of time? It doesn't sound like it to me. That's usually what it takes for someone to decide to move on.

Yes, it's going to take a little work. Yes, he'll be leery at first. He's probably going to test you a bit. That's okay.

What you need to do now, while there is still time and this can just be seen as a bump in the road and not a derail, is decide what you want to do. If you want to be with him, then it's time to confront your fear and go be with him. If you want to be with him, and let it slip by, take it from me, how you're feeling now will last for years and become a hard knot of regret. Don't let it go that far.