He still loves me and i hate his guts, what do i do now?

I dated this guy named zach, allthough i barely lliked him at all, he is this freak in my grade who nobody cares about, and my friends were alll like "why are you dating him bella? he is so disgusting!" and they are completely right, he is a pig, eats with his mouth open, brags about how good he is at footballl, and looks ugly as ugly gets. so anyway, it was eight peroid, i was so happy it was almost the end of school, i wa s gonna break up with zach, hewas always embaring me,m and stuff like that and i didn't like it, the teacher, Ms.ritch said "so eight graders, we don't know each other all that well, so lets play a little game called two truths and a lie" yada yad a yada so we had to tel two truths about ourselves and one lie, and everyone had to figure out the lie. so zach sai two things about random stuff and then the last was " im dating Bella, im gonna kiss her cause she said she would love if i did." you get it so after that ibroke up with him,today was pajamee day at school, i came in with a tank top, i had to sit ne xt to him in homeroom and he says "ive never seen a girl in shirt without sleeves before... GROSSSSSSSSSSSSS he keeps trying to get me back but i really dont like him how do i get him to leave me alone!!!!!!!!!