From what I've seen in my family some seem born that way(I remember years ago telling a cousin, who was only 5 at the time, the sky was pretty. She popped back with not really I prefer it a lighter blue ) and some it's years of abuse that turns them that way.

But all in all I really think you dodged a bullet. Let's say he did give you his contacts..what if they deal with him because they are like him?? So even if he'd kept his word he could have been giving you even more of a pain.