One of my bridesmaids is getting upset because she isn't my matrion of honor. She feels that since she has known me the longest, she should be my matron of honor. I want to have another friend as my matron of honor because she has been more supportive of me in the last years that I have been friends with her. She is also more supportive of my fiance than the other one. The bridesmaid is the kind of person that only is around when it is convient for her and when she wants to. What should I do?