Preface: My mom and dad are divorced, but it was amicable and they are still on speaking terms. They are both now in new relationships. My dad has met my mom's boyfriend, and they seem to get along okay. My dad's girlfriend, M, has never met my mom, and I've actually heard through the grapevine that she's said some not-so-nice things about my mother (things that my dad told my mom). She apparently thinks my parents should not be talking to each other at ALL, regardless of the fact that they have three children together...the youngest of whom (my brother D) is just turning 16 this summer. I like M well enough, but she never had any kids, so I don't really think she understands that when parents are divorced, it's in the children's best interest if they get along and keep the lines of communication open (mostly for the sake of my youngest brother who was only 13 when they got the divorce). It's especially important that they remain in touch because my dad lives in FL and my mom and brothers live in NJ. I'm not sure if she actually said these things, or if she did say them what context they were said in. She has never said anything rude about my mother in my presence, so I can't judge her based on what other people have told me she has said.
This brings me to my dilemma: how do I arrange the seating for the reception? I thought it would have been great to seat all the parents at one table: my dad and his gf, my mom and her bf, and FI's parents. However, I don't want to accidentally set off some sort of standoff between M and my mom (my mom would never instigate such a thing, but I don't know M well enough to know whether or not she could manage to be civil). If I seat my parents at separate tables, do I seat Jason's parents at their own table as well (i.e. 3 different tables for the 3 sets of parents)? It seems like this would alleviate any fears that I have, but our parents have never met each other before, and I thought it would be nice if they could sit together at dinner. They will pretty much all meet the day before the wedding. Crazy, I know!
Any thoughts/advice?