He had only kissed her at that point, but for me it was way more painful the degree of emotion/romance that had happened. They had made plans to run off together. To this day, I kind of don't care if he screws her, but I can't bear the idea of the "love".

I ASSume by this point that they have had a physical relationship. And yet I know that if he walked in the door and asked to sleep in our bed tonight, I would welcome him.

Doormat? Probably.