Looks to me like a pissed off, jealous husband in the background while the wife talks to another guy. Nice shot. Tells a story even if that wasn't actually the story.
Guy in the background is too far off... plus his missing partner's drink and purse are there. I see I guy slumped too hard on his hand. Almost nonchalantly laying down some rules while the woman listens and watches intently wringing her hands together from nerves.