Esther Perel is recognized as one of the most insightful and provocative voices on personal and romantic relationships and the complex science behind human interaction. The author of the international bestseller Mating in Captivity, Perel believes that the most traditional aspects of a culture and the most progressive and radical changes in a society take place around sexuality. Much of Perel’s work—both lecturing internationally and advising couples in her private therapy practice—centers on the topic of infidelity. Why do happily married couples cheat? Why does the modern egalitarian approach to marriage quash desire? Are the heightened expectations we bring to modern love combined with our pursuit of happiness directly related to infidelity? Join her and NPR’s Hanna Rosin for an insightful discussion about the future of relationships.