Stephen Galloway’s Truly, Madly describes the long and tragic arc of one of the twentieth century’s most extraordinary love affairs. Laurence Olivier and Vivien Leigh fell in love while each was already married to someone else. Each had a child, and neither was suited to parenthood or fidelity. Olivier’s first wife, Jill Esmond, seemed to recognize early on the intensity of the Olivier-Leigh bond, and what it meant for her marriage.