So my sister and I have been very close over the last 7-8 years of our lives. Earlier this spring (before I got engaged) my parents announced their divorce because my mother having an affair with her high school boyfriend. My father was clueless. They had been married for 29 years. My sister and I were very supportive of him and criticized my mother. I still am on very rocky ground with her. We got engaged in May and I very excited about getting married. We are best friends with my sister AND her husband. Last week she announced she wanted a divorce and didn't want to try to make it work. So this weekend in order to give her some thinking time, my FH and I, had the kids and my brother in law down to our house. Come to find out on Sunday her husband found out she was sleeping with his other best friend. She at this point isn't speaking to me, which yes I know this is very fresh for her but she could at least speak to me. I have decided to give it a month to think about, but she is my MOH and I am having an issue having her big the big main person standing behind me in my wedding in 5 months. I don't want to kick her out of the bridal party just move down to bridesmaid instead of MOH! Just want some opinions on what to do!! Thanks Ladies!