If my experience is anything to go by, it's because he is a f*^kwit and you'd be best getting far, far away from him before he causes you pain.
I don't know. People are crazy and complicated.
Sorry to hear that.
I think I know what this guy was trying to do. What is this guy like?
Sounds veeeeeeery suspicious. How long has he known you?
He must know you pretty well to "love" you, right?
Hmmm, people are weird, that's for sure.
Possibly. Maybe he thinks he loves you because nobody else pays attention to him, or you're the only person who even gave him a chance.