Boy advice?

Hey ladies! So, I was wondering if you guys can give me so advice and tell me what should I do. So, there is this guy, he was my neighbor and we were kinda like best friends when we were in kindergarten. After kindergarten, I moved to Mexico. I just came back a year ago. And now I'm in high school. I found out that this guy who sits next to me in Driver's ed is the same guy. His name is Max btw and he is French🙄👅💦👌🏻 he got SO hot. I swear. I asked him if he remembers, he said yes. So, instead of talking to me, catching up or idk, he ignores me. And he goes to talk to another girl in that class. I really like him. He is really sweet but not with me. Should I back off? I really don't know what to do!!!