"Fidelity, if we want to strip it down a little, is the virtue of those who feel weaker in the couple and have the impression that, having lost the man or woman they live with, they have no other “chance” than the desert of loneliness. And so they cling to the other's indifference, if not hostility, immersing themselves in those exaggerated forms of love that are the flip side of their absolute need for the other."