am I a bad person?

Two years ago, I had some troubles in school because of a classmate bully. He never harmed me directly, but he would make jokes about my clothing and my shoes. It was kind of his job to tell these jokes because he was the class clown. Those jokes, though, made me uncomfortable. I attempted to make fun of him to help him understand what it feels like, but all he did was ignore me and act as if I didn't exist. So I made the decision to get back at him by becoming closer to him until I became someone he cared about, and then I would distance myself from him. I tried to be friends with him for a while, until we became best friends. He assumed I had a crush on him for some reason, and his friends would tease him about us being a couple even though we were not. After we became friends and I realized how significant I had become to him, I realized that maintaining our friendship was meaningless because my goal was only to make him regret making fun of me and turning my school days into misery. I started to talk less with him. He became quite upset about it and attempted to keep us from drifting apart, but he was unsuccessful. We don't talk as much anymore. I can't help but think, Am I bad for doing this? Should I have forgotten about the past and kept being friends? I feel guilty every time I think about it. Thank you for reading, and please let me hear your opinion.