Everyone dies. Okay, kidding, but not by much.
Valmont and Madame de Tourvel are both dead as an unintended result of Valmont's game. The Marquise is exposed as a vile a schemer. She loses a lawsuit, gets smallpox and a disfigured face (metaphor alert), and has to flee high French society for Holland. Basically she gets what's coming to her. Cécile and Danceny, the young would-be lovers, each go off to the religious life to make amends for their sins of the flesh.
The unanswered question is whether the ending implies any sort of judgment in the actions of the characters. Was Choderlos de Laclos, the author, suggesting that the plots of the Vicomte and the Marquise were immoral? Or was he merely describing consequences without alluding to the question of their morality? Does what goes around eventually come around? The last sentence of the book, written by Madame de Volanges, concludes that nothing in this world really makes any sense, so it's pointless to try to understand it.
What do you think?