OP, I once had this old hs classmate play mind games and leave cryptic messages with me on facebook. I really liked the guy as a friend only. I am married and thought he could respect that. Long story short, I trusted him and later found out he had lied to me and had other mutual friends playing in on his mind games with me. He even posted stuff on amother forum after I left a call out thread telling him off. The entire situation broke my heart, since I really liked him as a friend. The only way it all stopped (the mind games) was I had to block him on facebook and never register on a forum with a user name. To this day I do not know why he wanted to hurt me emotionally, as I only wanted the best for him. As things got stranger on FB, I realized there was no other answer, he was a psychologically sick person and wanted to hurt me for some reason. He had given me a gift in hs and asked me out, at that time I declined. When we reconnected, I think he just wanted to seek some sort of revenge by pretending to like me again. It was very strange and I am very afraid of him to this day, I worry that he will physically hurt me and he only lives a few towns away.

Be careful, follow your gut instincts. I really liked this person, and wanted his friendship, but he was a total liar. I know this because a true friend would have never did what he did, that's not friendship; lying to someone.