GO BACK, YOU HAVE TO HELP HER
If there are any methods -- rational or not -- to erase this feeling from your mind, do it a.s.a.p. That is priority #1. Stop your brain from ruining your life.
I disagree with the one-sidedness of this advice - esp. without knowing all that much about the situation.
I have also been in a not really alike but also difficult situation and there are many layers. See also this. It might be that he understands only just too well that it was a mutual cycle. It might also be a cry for help on her side. Not that the method is acceptable but a signal it is. And I imagine a smart person can help her. Without going back. Someone else might help. Whatever help is the right kind here.
I'm still stuck in the Dark Arts mode and I'm aware of it, but I will ask you anyway:
Would you also give the same relationship advice to a battered woman?
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
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