searching for a story

I’m searching for a story about a guy who I think used to or still does work for the government, and he’s on a plane journey sat next to a guy and his girlfriend. This guy and the girl are constantly arguing over their views and they end up fucking in the plane toilets after he threatens the boyfriend not to go in there.

Source: reddit.com/r/eroticliterature/comments/wdaqml/searching_for_a_story