AZ is not a common law state.
We live in an apt and I own a rental property in my own name.
I am her beneficiary on all of her accounts. We have no children.
I could honestly walk away from this in 2 hours and never have to deal with her again if it came to that. But, I like her, and she likes me. We still work hard for each other's affection. We aren't counting on the binds of a contract to keep us together.
That's your situation though. Some states, countries, etc have much stiffer laws. I mean, I could say that in a marriage I'm protected if I put my property and other assets in my mother's name, don't have kids and draw up an iron clad prenup.
I have a coworker that got married, didn't work out, they said fukk the courts and left with whatever they brought into the realtionship. I'll admit it's rare...just saying there's no fool proof plan in many cases.