Help!😭😍

So i have had this crush for over 3 damn years and neither of us has made a move nor know eachother. Heres the story... we were in the same classes in 7th grade but ever since i moved up into 9th grade we obviously werent in the same classes and dont speak. I pass him in the corridors and tbh its a little awkward cause our corridors are so long it take ages to pass someone and here’s my crush at the other end walking past and looking at me but the awkward person i am bites my lip with my teeth and performs an awkward smile. Im way too nervous to talk to him😭 can you guys help? X