: The "deep" aspect of the story is the realization that the affection was performative. The kiss wasn't just a lie—it was a weapon used to maintain a false reality.

Depending on the media you are looking for, here are the most likely origins for that title:

* El Cuerpo de Cristo. * Dios y el Abogado. * Un Pacto con el Diablo. * El Beso de Judas. * El Nacimiento de Bolivia. Queen of the South Wiki | Fandom Spanish Word of the Week 53: Beso -- 1 minute series

The story usually follows a structure where a moment of intimacy (the kiss) is revealed to be a facade for an underlying betrayal.