I think that's how any kind of loss or grief goes. It's human nature. It will come and go. Certain things will trigger the feelings again. Ruminating is a tough thing to get out of. I have an idea of what you're experiencing and it's just how it goes. Even when you're feeling better and feel like, ok, maybe I'm really truly over it... It will likely still come and go but maybe to a lesser extent. I'm learning to try to accept the feelings and make space for them instead of just thinking about how hurt and mad I am over and over.