It's one thing if he "lusted in his heart" and kept his feelings to himself. After all, it's quite natural to harbor some fantasies--as long as we don't act on them. I think he's crossing a line by saying and writing those things. Are you sure he hasn't taken it even further? Anyway, he sounds immature and abusive if he rubs your nose in this. Consider moving on and finding someone who really cares about you.