keep dreaming of him

Riley

I got away from my abusive ex within the last 4-5 months and I have tried not looking back and I thought I had gotten past thinking of him. But for the past few days he has been popping up in my dreams and its setting my teeth on edge and causing my anxiety to spike. I don't know what to do about it, I feel gross and dirty and angry when I wake up from another dream he's been in. How can I stop this??