Sweetie, that guy was a classic douche. When any man brings up his "commitment issues", he is only out to hit it and quit it. Guys like that are void of any empathy. They won't talk to you. My advice would be to bitch him out so he never ever ever ever thinks of you as a back up plan if he is feeling lonely. And, you didn't do anything wrong. You weren't dealing with a real human being.