My ex crush followed me on instagram?

We used to have a crush on each other back in eighth grade, and we told each other. It's too bad that both of us we too nervous and never really talked to each other once high school started. Since neither of us really went for it and made a move past "confessing" and texting each other, we ended up not talking to each other anymore. You'd think we'd be at least friends, but it never happened. We haven't had an actual conversation in two years despite being in band together. Never said hi to him or anything since sophomore year. Now I'm a senior who's recently made an Instagram account, and he requests to follow me? What does that mean? Why would he feel the need or want to do that when I have 0 posts and haven't talked to him since sophomore year?
My ex crush followed me on instagram?
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