I have a crush on a boy who is one of my friends but now I'm too afriad to even say hello. What should I do?

Ever since TAKS day at PE iv been afraid to even say hello to him. I know he probbaly knows i like him but still, how do i get over my shyness? I'm in 5th grade (and please dont strat up with your way to young because half of the girls in 5th grade have/had boyfriends. I also know kids in kinder-4th with boy friends. So ha.) so its not like i can talk to my parents or anything and my friends arnt much help so HELP ME!!!