Whyyyyyyy?!?!?!?!?!?!

So I'm 14 and I moved to Florida in July I used to live in Pittsburgh PA. I grew up living with this boy, he was at my baby shower, he was in the hospital when I was born, and I grew up 2 blocks away from him so we would play together all the time and as we grew up we hung out less and less but about 3 or 4 years ago I got a crush on him and I keep getting older it gets more serious. About 6 days ago I started high school and I have this boy in my class that look like him and now I can't stop thinking about him and I've been dreaming about him and when I can't go to sleep I think about him. The only problem is that he's 16 turning 17 in a month and I don't know if he even gives me any thoughts or likes me and all I know is that I've loved him for a long time. WHAT DO I DO??