Your 9 and you have a crush how do you know if that boy likes you?

Well, I'm 10 and I've had a crush on the same boy since i was 8. Now he's dating my best friend's friend here's what u do. number one idea. ask his best friend to ask him who he likes. or, just tell him u like him. just trust me after 2 years of liking the same boy it feels SOOOOOOOOOO good once you finally let it out. and i promise you will feel better once u tell him. and that way he can tell u if he likes u or not. TRUST ME.