My sister is a BM simply because she is my only sister...that's about it. We have always been close as kids (it was just us 2) but as adults we just took two different routes. She lies a lot, and I mean about stupid things. I told my MOH and other BM's to not be surprised if she doesn't participate in anything or comes to the bach party. I basically predict she will be there on the wedding day and buy her dress, and I can see her buying her dress being an issue. Sighsss!! Is this fair to my BM's? They go above and beyond what they have to for me, they don't seem upset but its kind of bothering me a little.