Why does this guy keep adding me on social media, is he trying to get my attention?

This guy I go to school with has repeatedly friended me on social media, across different platforms. Initially I didn’t think much of it, but it continued and I honestly don’t know what I’m supposed to think about it. He added me on BeReal, Snapchat, and Instagram (although I know for certain we’ve been following each other for at least a year, he must’ve unfollowed and refollowed me?) I thought he was maybe trying to give me a hint or something so sent him a snap and he’s never even opened it, so I don’t know what he’s doing, at this point it’s just annoying.

Any clue what his deal is? We’ve never spoken before so it’s just weirding me out

Why does this guy keep adding me on social media, is he trying to get my attention?
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