You and John were technically married, ok, maybe it's actually legally a marriage, but you kept your own last names, and it was purely so he can go to your country without any annoying set up. It's only really a marriage on paper.

You know he saw other people, and he knows you do too, so he didn't really care. You hardly talk anyway. The only time the whole marriage comes up anyway is what people find out about it and get confused.

Today was one of those random days he'd have a mission in your country. You didn't know, obviously, nor really care.

You were just at a club with friends at the time, at the moment they were in the bathroom, so you were alone at your table, when a random drunk starts bothering you.

John had unknowingly arrived at the same club to drink after his mission, seeing you get bothered by the person. He watched a moment, knowing you could defend yourself, but would step in if needed.

"Hmm..."

John hums watching over his drink. He debates using his 'husband' card to get the person to leave you alone.