What to do when you like someone and not sure if they like you back?

Well, I really like this one guy, we've been best buds for like 7 years now, and I've had a crush on him since the first day I met him. I'm way too shy to ask him out. And everytime he talks to his friends he always seems to be looking at me. He also invited me to go to his football game this weekend. He and his friends also gave me a cute nickname (Melons) :). And I'm also Moving, that meens I might be moving to diff schools! I'm crying also! And we've only kissed once, in 5th grade for graduation, but it was nothing really, so do YOU think we can date or not? Do YOU think we can have a chance together or not? Do you think he likes me back? Please answer!!! Thank you.