Well you can't be friends with him just by standing there and waiting, you'll need to do something about it.
How you described this guy, and your problem, it seems he's a bit uncomfortable around you now that you guys found out you like each other. Or he could be embarrassed and doesn't know what to say to you anymore. So just give him some space, and let him think things through. You can smile in his direction once in a while to let him know that he could always still talk to you.
If he still doesn't talk to you after that, then just tell him how you feel about everything. I know it might be weird at first, but if you really want to keep the friendship going, or something more, communication is very important. And he needs to know what he's doing isn't being appreciated.