Not marrying won't do it. Anyone you have a relationship with is a spouse under law, girlfriend, mistress, boyfriend, hooker.
Very true. They keep broadening the definition of a "Domestic incident"
As well as the definition of a felony. And they're pretty much doing it without challenge.
At some point, everyone will be either a domestic abuser, a convicted felon, or both, and the 2A will be moot.