After my fiance popped the question, I asked one of my close friends if she would be my maid of honor. Sadly, she and I are now not getting along. She constantly stands me up when we have plans together (all completely un-wedding related) and has been very ugly to me when I call her on it. My fiance was actually the one that suggested that I not use her in the wedding because he is concerned that she will no-show on our big day and upset me. I feel horrible asking her to not be part of the wedding party, but I don't know what else to do. Any advice?