My MOH and one of my fiance's groomsmen have been dating for 4 years. We both asked them to be part of our wedding party because they have been very good friends to us. My MOH recently confessed to me that she is planning on breaking things off with her boyfriend. I don't agree with the reasons why she is breaking it off with him (infidelity on her part...) and am seriously shocked that she is behaving this way. She is showing a side to her character that I have never seen before, and I am questioning my friendship with her. I am 99% sure that things will not end well between the two of them. As selfish as it is on my part, I don't want to have to deal with the drama that this will bring to my wedding. I feel like if we keep both of them in the wedding party, that their drama will overtake our day. I know it is bad etiquette to ask a MOH to step down, but I honestly don't know what to do. I wouldn't be surprised if our friendship turned sour over this, especially because my fiance now wants nothing to do with her because of how she is treating his friend. I can't bring myself to have a MOH that my fiance can't stand. Feedback??