Anne makes a good point. If it's not an immediate concern, just something you're idly pondering, then I would bring it up as rhetorical/hypothetical. Let him know right off that there's no pressure to agree or feel a certain way about it, you're just exploring concepts.
Gralson: my husband. Auto: my girlfriend.
Zoffee: Auto's husband. Cue: Zoffee's boyfriend. Bookie: Cue's wife.