Does he like me?...it's confusion for me.. :/ anyone can answer this? pls!!?

[Lonely girl :/]

Recently this boy (that i know him face to face but now it's been sometime since we last met) started talking to me on facebook.
I really like him and for some time i used to think that he likes me back cos he used to talk to me so much when we ever met and hardly takes any notice of my friends that i would have with me, even if he knows them.
Now when sometimes i flirt with him trough text he doesn't flirt back. I don't know why. And then he's always he who starts talking and he sometimes calls me dear and tells me to hang out some time and that he missed all of us (me, my bff (a girl) and his best friend(a boy) cos we're not at the same school anymore) but yet when ever i flirt with him he never flirt back.
Only once he did it trough messages but never again.
Any explanations?
Thanks a lot

[snowfalling]

Stop trying to flirt with him.. ur gonna look desperate. Just chill.

[Addie]

He probably doesn't like you Facebook conversations are only for when people are bored and have nothing to do. If he talks to you at school he probably likes you.