Wow, I went through the exact same situation ! Unless you can be civil to each other it will be a very tense and toxic environment!
I also couldn’t leave because of the financial situation. And there were no kids involved ! Let me just say this , if it ever happened again I would live in my car.
The possible ramifications of that situation going sideways could be unbelievably bad !
Whatever you do , use the “ rational “ side of your brain a lot more than your “emotional” side. Just my 2 cents. BTDT.