is there any mental disease that a person will act like this?
I don't know if there's a mental illness. I do know in the past I have pushed good people away because I didn't want to hurt them more. My motto was Fiona apples- fast as you can song. My suggestion is stay clear of this guy because he's not currently stable and doesn't seem to currently be trying to get there.
didn't he like me or just changed his mind? I can't answer that