That is creepy
It reminds me of this guy I had never even met, but knew through Myspace, who got insanely jealous about another myspace friend whom I had also never met who didn't even live in the same state. His messages always dripped with anger that was unsaid, until one day he finally exploded and starting telling me "were you there when I stayed up with her all night so she wouldn't kill herself, where were you when...?"
and I hadn't even met the girl in person yet. I found out later he had hacked my account and was reading every conversation and then it was clear when he would suddenly get all upset out of the blue.
The problem with people who lie to you, is you never know what is the truth, I don't know anybody can live like that