It's not a thing. It's not on offer. It's not what you get after a wedding. It's not what you get when you register with the government. It's not what you get after exchanging vows.

It's really more of a one-sided economic contract with draconian terms on termination of contract. And need I remind you that termination can be unilateral.

What's with the discussion here from time to time on how and when you can "get married" again. Or "how to find someone to re-marry". There is no marriage, it does not exist.