Why is my ex being mean?

Ok it’s been a year since him and I were “together” I unfollowed him last time because he was being clingy and weird. But now 1 year later he’s ignoring me and being rude, like I’m being nice to him. He follows my best friend, but he won’t follow me. He’s acting like I hurt him. I doubt did 🙄
Why is my ex being mean?
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