Harrison Scott Key's new memoir is How to Stay Married: The Most Insane Love Story Ever Told. It’s the story of how infidelity tore his marriage apart, and how he and his wife Lauren patched it back together. It is hilarious, and it’s wise, and it’s exceedingly hopeful. To quote the jacket copy, “How to stay Married is a comic romp unlike any in contemporary literature, a wild Pilgrim’s Progress through the hellscape of marriage and the mysteries of mercy.”