I hate seeing my ex

My ex boyfriend goes to my college, and I have bad anxiety whenever I see him. I feel like I’m gonna throw up and it’s hard to breathe. He acts like he doesn’t even know me, and honestly that hurts cause I feel like he never even cared.

I don’t know if he was abusive, but to give some background he always hurt me during sex and wouldn’t stop when I told him to, and I would cry every time. He tried forcing me to marry him so he could stay in the country. And during the relationship I think he was cheating.

He was supposed to return to his country, but he’s back and feeling right at home. But I feel trapped in my own town.

I don’t still have feelings for him, and I’ve moved on with another guy whom I love. But every time I see my ex I get flashbacks of horrible memories together.

I don’t know what to do anymore. I want to drop my classes to avoid him.

Any advice?