If I take a contract that says I will pay a person to play football for me, and he turns out not to be so good a football player, yet he never lied to me going in and it was a legal contract, it sticks. I still have to uphold my end of the contract. But, if the football player terminates, or divorces, the contract, he would owe me all the money I paid him, plus what ever the penalty would have been included in the breaching of the contract.
You have me confused with somebody else,cowboy. I've never been married,and if I HAD been the guy I wrote about,I'd have thrown her out on her ass about 9 years earlier.
I am guessing the reason he and her are still married is because they see this thing the way you do,as a business contract. Neither is willing to give up even a small portion of their material goods to be happy. If that's the way they want to live,so be it. It ain't for me,though.
BTW,I would never take a vow "before God",either. I don't believe in God,so such a vow would have no more meaning that taking a vow before "The Great Pumpkin".