At the Guardian she tagged the ten worst couples in literature, including:
Vicomte de Valmont and the Marquise de Merteuil (Les Liaisons dangereuses)Read about the other entries on the list.
The ultimate twisted and sadistic literary relationship. The scheming pair get their comeuppance (of sorts) when all of their philandering ends in heartbreak and tears, death and, er, smallpox. The two lovers seduce and manipulate their way through a whole host of vulnerable characters, and in the end nobody gets to have a happy ending. Probably would have been for the best if these two never met, to be honest.
Les Liaisons Dangereuses also appears on Jonathan Grimwood's top ten list of French Revolution novels, Helena Frith Powell's top ten list of sexy French books, H.M. Castor's top ten list of dark and haunted heroes and heroines, and John Mullan's list of ten of the best lotharios in literature.