A big CRUSH

So i have been attracted to my neighbor for now 4 years, I cannot get over him even thought I see his flaws and I also am aware that at some point he has liked someone else. He used to like me back but now I’m not sure, he has been avoiding and ignoring me making slight eye contact whenever my friends aren’t around. But i wanna get over him and i need help. P.s i have never talked to anyone about this which is why i am posting it anonymously and I’m 13