Post-nup agreement

hi NoFap, I have a strange question for you.

I am a PA. My SO and I are about 5 months post d-day and she is struggling through the same question of whether to “stay or go”, like many others. We have 4 kids and I am the sole breadwinner, and I know that one of the factors influencing her is what would happen if we split. Would she have to go back to work etc, leaving the kids with a nanny.

Now my view is that we made a deal and a life together. We both wanted kids and both agreed that we wanted them to have their mum at home. She is a lawyer (like me) and put that career on hold for our family, and I couldn’t have gotten to where I am without her support.

Of course I’ve reassured her that he won’t be left high and dry were she to seek a divorce but clearly my credibility is at an all time low and we have witnessed too many messy divorces for her to give that much credence. So I’m wondering whether to offer her some kind of agreement, ahead of any divorce, to say that we would share whatever I earn (net of our costs) 50/50, or something like that.

Just wondering what people think before I offer it. I don’t want a divorce, but I want the only obstacle to that step to be me and my behaviour, not practical stuff (which won’t lead to reconnection and intimacy, only resentment)