I'm going to add my voice to the chorus saying to just go and listen and commit to nothing, but for a slightly different reason. My STBX met me in November to see if we could come to agreement on major items without going to court. I thought he had expressed his opinion on most things (He wanted me to be able to keep the house and just wanted "flexibility" on child custody). I showed up prepared - with a spreadsheet of items to discuss, drove the conversation and had him initial items that he agreed with. The tone of the conversation was pretty amiable (I thought)and he agreed to everything I proposed.
Then later that night - he emailed me to say that from now on any discussions needed to happen in email, rather than meeting him "with my list of demands" for an "extremely favorable settlement" (it's not, by the way). Of course, for the record, the only meaningful item that he had an issue with was that I wanted him to fund the girls college accounts a certain amount every month and wanted this in the decree. He said he "couldn't trust me" not to make a complaint if he was short one month and this would be damaging to his profession. Whatever. I knew that one was a long shot - so I let it go along with a comment that it would never make sense for me to do anything that interfered with his gainful employment.
The point of all this is that even though we actually agreed on just about everything - the fact that I drove the conversation has allowed him to create a narrative in his mind that, in regards to the divorce ,I am being demanding and unreasonable. I wouldn't care except that attitude doesn't help with the girls.
Your situation is totally different - but I would still let him come out and say what he wants first, without much comment.
