I can't add anything here. I agree that he sounds like he has some security issues.
I'd just drop it. I think they may have bigger issues.
Yeah what they all said. Its amazing how facebook means way too much to some people.
Facebook causes some problems. Be careful with it. Regarding meeting this guy again: be kewl and if he starts, let him know verbally you thinks hes nuts.
As I've been saying for 25 years, NEVER add another guy's girlfriend on facebook.
LOL.
Good luck, Seb. The guy is obviously intimidated by you.