BOY HELP?!

So some backstory, I went to school with this guy in elementary and I liked hime but we were so young and stupid. Anyway so I found out he was moving in next door to me then I found out he's in a few of my classes. I think I like him and I wanna get closer... But he's kinda popular and I'm not plus I'm kinda shy. How do I get home to notice/ like me????

PLEASE HELP!