Should I add my crush on fb?

[Mr. Hockey Guy]

He was in my bio class last semester but never had the opportunity to talk to him.
Every time I see him standing at his locker, he would look at me first, then look away then when I walk past by him, he would look at me again.
This happened more than once but I don't really know if he feels the same way I do for him (most certainly not but I'll never know if I don't make a move?)

I saw his account on fb but I am not sure if I should add him or wait for him to add me
would I look desperate if I add him?

He's a very sweet guy -- I can tell by the way he interacts with everyone around him and he's super sexy too..he plays football and hockey
and I love his smile the most xD

I didn't develop this feelings for him until maybe last month?

Have you ever been in the same or similar situation as I am and did the person end up liking you back? Please tell me your stories/life experiences.

And what if he does add me and he talks to me in school? I never talk him because I'm really shy..hehe my heart beats so fast when I'm near him with no one around. I'm 18 and he's 19.