I have 2 close friends who can not stand each other. One of them is my bridesmaid. I will call my bridesmaid A and my friend B. They almost had a fight last time they saw each other (A is passive, B is aggressive). I do not want any tension nor awkwardness during these happy moments. B told me that since she does not like A and knows that she will be at the bachelorette party, that I should have 2 parties. Idk if she was joking or being serious. They will see each other a couple of times...bridal shower and wedding, but I do not know where to seat B. We have been friends since high school and I can not even sit B with my high school friends. The only table is my college buddies (they know each other through me) but they all have significat others and B is single. Then B told me a few things which I didn't like such as who to invite and who not to invite, add +1 guest for single guests. I feel like I am in high school again :-(
What should I do???? If I do not invite her, she will be extremely upset and our friendship will end.