Hey there. I've just read your entire thread as I have just (very recently - one week ago) gone through a very unexpected and painful break up myself, and I am finding it so soothing to see that other people are going through similar things themselves, and surviving! As we all will.
I just wanted to add a little comment... As I think I have been on the other side of your situation a bit, though have never behaved as cruelly as your ex, I must admit! It sounds to me like she is keeping her bases covered, that she really doesn't think you are the one for her, but wants to make sure she doesn't end up alone. I think this is something a lot of spineless women (and men) do... I can't relate to it entirely as I always made clean breaks with my ex's, despite the fear of being alone, but I can imagine what it would have done to them if I hadn't! So unfair, and I have to say, it makes me wonder how nice a person she is anyway? And also - how courageous?
My ex is putting me through similar stuff at the moment, and it's so confusing, I am getting caught up in his confusion (though I have always been 100% sure that he was the one for me) and ultimately my pride and self-preservation got the better of me and I have just this moment deleted all his numbers, photos, texts - everything - from my phone. If it was left up to him, he would keep this going for weeks, months, years, so I have to rise above his behaviour, and remember that I am too good for it!
Yes, there is something noble in being able to forgive, but I have to be blunt and say that I think you are in risk of making things worse for yourself. She is a selfish and weak person. I can see that, and regardless of whether she wants you back, do you want that? For the rest of your life? I can tell you for certain there is something better for you out there. There is for everyone.
I'm sorry if this is all hard talking from someone you don't know at all - but I'm saying it to myself as much as you! Ultimately, your pride at how you conducted yourself will be one of the major things you take from this relationship, and this is a great opportunity to grow that pride. Don't let her keep you hanging on because she is a coward!
Be strong x