Here is one way to look at it.
Their relationship? Who knows what the chances are but they are together right now so that is the end of it really.
Your relationship (the one between you and her, what there is of one) stand at about zero percent from what I've read.
It is tempting to hyper-focus on something outside of our selves as a way to avoid our pain and the things we need to deal with. There is no secret way around those things though. We have to walk through it and come out the other side.