How do you get over someone??

So there's a guy that I love more than I thought I could. I'll admit that I was the first to fracture our relationship, but I tried to patch it up. This boy (I don't know how I still care about him) has told people not to be friends with me, he's called me a thot, he's called me so many other things (not to my face ofc), and more. I don't know how to move on. I still love him, but I love myself more. I need help on how to put him in the past chapter of my life.

(He also got expelled, and may be facing criminal charges.)

(We are also both teens in highschool)