I think this is the thing that's confusing me the most. I know how toxic the relationship was, I know I have to get away from her but I also still feel like I love her and miss her. Sometimes I wonder if I'm some sort of idiot

I've been out of the relationship from somewhere between 1 and 4 months, even that was a bit confusing with the recycling and attempted recycling.
Also why do I find myself wondering what she's doing so much of the time. I find myself wanting to know if she's with her next victim. I also know she was with him when she was with me. Am I just being jealous? I don't think so because I know I don't want her back. She actually asked me to go for coffee with her last week and I told her it was a bad idea and that we should continue to go our separate ways. There lies another story of a spectacularly hostile email exchange. :/
I just want it to stop... .In the past I'm sure I've moved on from relationships much more easily than this.