Why is he stalking me?

Okay, so I'm currently in college, and there was this racist kid in high school who used to harass me, call me names, and say racist things to me. He would call me ugly and say hurtful things. Then, in our senior year of high school, he forced me to follow him on Instagram by threatening to break my phone and report my entire account if I didn't comply. Surprisingly, he was more bearable during our senior year. After he found my Instagram, he started texting me all the time—when I say all the time, I mean constantly! So I guess we sort of became acquaintances at that point. At graduation, he clapped for me and took pictures of me, which I found weird. After that, he invited me to his party, but I decided not to go because I felt like we weren't that close. He texted me while drunk, yelling at me and asking why I didn't come to his party. I explained my reasons, and he responded with something like, "So you think you're a celebrity or something? You're just trying to act famous. Screw you." And that's how things ended, with him unfollowing me. It's been eight months since then, and I'm in college now. However, he still views my stories and watches my account, even though he has a girlfriend and everything.

Why is he stalking me?
Post Opinion