Any advice??

I’ve had a crush on the same guy since second grade. We are now in high school and he recently just moved back to my school. I’ve tried to forget about him but every time I see him I fall all over. I know it’s very stupid because we don’t even talk to each other. The only thing we have in common is that I get along well with his friends (mostly guys) and some even try to help me. But I just can’t, I’ve tried talking to him and nothing. Should I just ignore him and finally move on?? Or??