All this pain and remorse you are feeling, you have to understand, it is all you. She is not in your head and couldn't care less. It's all in YOUR head. You are living and reliving a drama and as a result it grows more and more important to you. When you pick up a small stone, in your hand it remains small. Hold it up to your eye and it blocks all that you an see. Perspective is everything.

YOU are hurting, YOU are in pain, YOU are sorry. Do you understand now why your ex doesn't care? It's still all about you! You are projecting on to her. When it isn't about you, then maybe you can talk to her but right now you are holding the stone too close to your eye. You are blind to everything else.

Vent here, but understand, all this drama is in your head. Years from now you will look back and wonder why you expended all that mental energy on it. For the sake of your kids, channel all this energy into something productive for them!