You could go up to him and say "Hey long time no see, how have you been, maybe we could grab a burger or pizza sometime and catch up." And then take it from there (: I'm sure you'll get over your shyness quickly.....
So I like this boy and I have known him since like the 4th grade. We are now in 8th grade. I haven't talked to him since 5th grade and I want to talk to him but I'm very shy around him. How do I get over my shyness and talk to him?