>>5
If you put it that way, then do it slowly and work on your first priority: Getting noticed and gaining self esteem. >>4's advice is good.

With him and your friends try to participate more in the conversations they are having. If you find time with him (this includes phone calls, IMs, text messaging and general 1 on 1 talk), just start up a small conversation on your interests, his interests, things that are happening, etc.. Start out with a phone call (it's best in your situation); if you hit voice mail, ask him if he could call you back and chat for a bit later on.

You'll eventually want to confess sometime in the future (where you can get in a normal conversation and know him better), that's where >>2 would come in (if there's stress, it feels better just to get it out).