Guy's Behavior

He likes me but unfollowed me! Help!(there's more)?

This guy has liked me for the past year now and we are now juniors. I found out he liked me when I had a hardcore crush on this other kid. He still liked me though. Now that we are juniors I kept thinking about him all summer and realized I really like him. I go back to school and the first day he seems nervous and that he still likes me, but a couple days later he transfers out of my class and unfollows me on insta. I don't know what I did. And the next day I went back to school he was staring at me and seemed like he still liked me. For some reason my sister said he looked depressed all day. I now have tried to follow him on insta on my main but he still hasn't followed back. Did I do something wrong? Does he still like me? And by the way last year when he liked me he didn't follow my main account but he followed my spam. But obviously he unfollowed a day ago. Please help.
He likes me but unfollowed me! Help!(there's more)?
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