Except that there is a doctrine called the doctrine of necessaries, and in Minnesota it is not a piece of old common law, it is a statute, and it says something quite specific.

Part Twenty-Nine: Necessaries

Minnesota Statutes, section 519.05.

I know it by heart.

I could not tell you my own National Insurance number but I can tell you that one.

What it does is make a spouse jointly and severally liable for necessary medical services furnished to the other spouse.

Not for their credit card.

Not for their car loan.