Michael,
First of all, let me just say that you have been very strong with dealing with all this and I'm very proud of you! As you have discovered, you didn't die of a broken heart. And as hard as it has been emotionally for you, I think that you are stronger for it and you are more equipt now to deal with what she can dish at you because you know in your heart that you can always walk away from all this and close the doors on her by stopping all contact.