MIL speaking poorly of my own mother
I’m 26F and my fiance is 28M. We’re born and raised in Texas - parents have known each other for years and my fiance and I were reintroduced as adults, fell in love, and are planning our wedding now!
The wedding will be held in my hometown, but his parents moved away years ago and don’t keep in touch with many people from our town. Since my parents are still here, they’ve been taking lead for the majority of planning. His parents want to be part of decisions, but they think we can plan last minute (we can’t..) so they’re avoiding making any actual decisions. For example, my parents have asked if we all want to plan an engagement Pooja 6 months ago. His parents kept saying they haven’t thought through it, and now my parents are saying “we want one so we will plan but let us know if you have thoughts”
Anyway, I had a feeling that there was some beef going on with the parents. I did a bad thing (I will fully admit) and went through my fiances texts with his mom. She is belittling my own mom, calling her a narcissist, calling her a “my way or the highway” type of woman. My fiance is trying to keep peace and stand up for my mom while also trying to avoid shutting his own mom down. I don’t blame my fiance for not standing up for my own mom more, or for not telling me about this - his role here is tough.
Now that I know this information, I can’t shake it. My parents may seem pushy since they are direct, but they usually leave room for other opinions and can easily be persuaded. His mom just isn’t speaking up directly and instead complains to my fiance, when she has every opportunity and right to speak up (and think about an engagement after 6 months of questions??)
How do I approach this conversation with my fiance? With my own parents?