So I'm a little confused.This guy and hang out with the same group and I think he likes me ..like he is always looking for ways to get my attention when he sees me and teasing me.He will come up behind me and whisper in my ear,nothing exciting,work related but he is defintely in my personal space.Also,he came to my birthday party last year and brought me a really expensive wine so at the very least I know he likes me as a friend.Anyways, I don't understand though why he hasn't yet added me as a friend on facebook.He knows I am there b/c he is friends with all my friends.Would a guy hesitate to add a girl onto facebook b/c he is shy or is he just not interested at all?