IMO somethings you can never forget. And that's ok. But if you can, you have to try to let it go. You can't make it change or take an instant replay and fix it, so what is the sense of continuing to let it hurt you? I have many "bad" thinkgs etched in my mind and I think the culmination of these things and somehow finding my self-respect has allowed me to start to see a way out. I certainly never wanted any of those things to happen, but I know now I can't fix it, even though I don't want that stinking memory in my head.
Maybe we have to choose to think new thoughts and fill our lives with new memories to push the old out??? I don't know, but maybe that might help both of us.
HUGS!