He is listening so intently, because he wants to know about your life, and he is taking an interest in you.
I finally had enough and got all emotional begging pleading and was angry called him a narcissist telling him he prob cheated on his wife.
It feels good, no doubt, to know that someone cares about you, but it is vital to see the borderline between real love and ordinary affection towards someone.
He may try to avoid you as a defense mechanism for fear of.
When he was feeling uneasy and uncomfortable, he bailed.