I know the advice is often for parents to say we decided...but that seems dishonest.
I've felt the same. My IC said often kids know more than you give them credit for, and it's ok to acknowledge that the parents can't agree to stay together. I will have to get a clarification on this from my IC. I'm fairly sure my kids know who the unhappy one is.
Me: 50, MLC/WW 45 Young kids Nov 2015: BD1 Apr 2016: BD2 Jan 2017: W filed Feb 2017: D final