I don’t think you’re over reacting, over thinking nor making it all up. Your friend sounds emotionally abusive to you proven by he belittled your feeling when you told him that he was making you uncomfortable. Also you had fear when you were around him. And he made you lost your confidence and started hating yourself? Another things that are common to be found in the victims of abuse. One thing I want to add is that it’s a common tactic of abusers to be nice to us once in a while, that’s how they keep their victims around.

Skeezyks posted some useful links that you might want to check out. Don’t feel terrible for posting your problems here, that’s what a support forum is about. Please be kind to yourself and keep us updated if you want