Need some oppinions

I have a crush on this guy. At first i thought the guy maybe didnt like me at all because of the way he acted. I then realized the way he is with me he is exactly the same with absolutely everyone. He has social anxiety. He typically always keeps to himself and seems to be in his own world. Hes always looking down or on his phone. He doesnt talk to anyone and when anyone tried to talk to him he is very short and gives 1 word answers he never engages in conversations. He never makes eye contact with anyone. If someone tries to be funny or tells a joke he seems to not find it funny like everyone else. He just nods and smiles he doesnt ever have much of a reaction to anything. When anyone approcahes him to try and talk tou can tell he gets nervous he barely says anything and eventually he will run away quickly. So because he seems to have social anxiety i always iniate a conversation with him i always try to be nice and friebdly and always attempt to talk to him. But i do it via email or IM because i take it face to face interaction is hard for him. Im afraid to tell him of my crush just yet because i dont want to scare him away so i thought of trying to build a friendship first. Now because it seems he has this anxiety is it bad that im always the one to try and talk to him? I dont want to annoy him but i cant tell because hes difficult to read. Any oppinions would be great

Go for it. If you don't try you don't know. Life is short and all the jazz.

Honestly, I'm not sure if that is just social phobia, if he lacks facial expressions. However, maybe I'm just like that myelf(I have some SA issues) I don't know since nobody ever tells me about anything of that nature (understandably so).
But if you like him why not. Speaking from my own experience I would appreciate a girl trying to reach out to me, because I find it very difficult to do so myself. He might be just the same way. You never know.
If he reacts uninterested then please remember that you will meet plenty of other people and life will go on as normal.
Hope this helped.