[Responsibility2nd]

You know what’s next, don’t you? He’s going to make an honest woman out of Heather. And marry her.

Is there a law that you can’t marry your girlfriend? Even if she is your adopted daughter?

(yeesh!)

[null and void]

In some cases in some parts of the country if you divorce your wife, she’s still your sister...

[MrB]

The left (at the behest of their “father”) has been fighting the traditional concept of family for decades,

so any of these weird configurations is not out of the realm of possibility once you reject the “common” understanding of “mother”, “father”, “wife”, “husband”, “children”, etc.