My sister decided three months ago (six month before my wedding) that her and her husband should seperate. We had already asked him to be in the bridal party - and his whole family received save the dates and were invited to by bridal shower. Now it is awkward and uncomforable for everyone- I am not sure what to do. I tried to let my sister and her husband work that part out but they can't agree as to how to proceed...HELP!