Should you forgive your high school bullies years later

So I haven’t been to high school in 6 years I don’t keep in touch with many people except like 2-3 people because I literally hated everyone else. But when I’m in public I see alot of people from high school and they come up to me and act as if we are bffs and that they didn’t treat me like shit. In high school I was over weight and had acne so people would constantly laugh and me and call me names but my best friend was terrible they would steal her clothes after showers and lock her out of the changing rooms naked they cut her hair off would glue things to her uniform and throw food at her as well as other things yet the people who did all of this think that it’s okay now to be friends?? I said to one of them that they had no right to be speaking to me and that I still think there a disgusting person for what she did and she was like omg as if you still remember all of that from years ago that’s SoooOO weird and who even cares it was that long about. But I still hate all of them and hold grudges is that weird