I ignored him the next day but ONLY cause I'm shy! Now he ignores me...?!?

He's probably just hurt or embarrassed that you didn't show the reactions he wanted to see at first. I've been there, done that before so you don't have to worry much. It seems like you guys have some sort of silent connection between each other so it shouldn't be that hard to talk to him one on one. Just pull him aside one day and start talking. Just start over from scratch, introduce yourself properly and just start off as friends. His feeling towards you should change in no time.