Emily Bobrow in The Economist:
Seth and his girlfriend of many years were already engaged when he discovered she had cheated on him. It was only once, with a co-worker, but the betrayal stung. “I had jealousy, insecurity, anger, fear,” he recalls. “It was really hard to talk about it.” He wondered whether his fiancée’s infidelity meant there was something fundamentally wrong with their otherwise loving relationship. He worried it was a sign that their marriage would be doomed. He also still felt guilty about an indiscretion of his own years earlier, when he’d had a one-night stand with an acquaintance. “I knew that what I had done meant nothing,” said Seth, a New York-based entrepreneur in his early 30s. “It felt like a bit of an adventure, and I went for it.” But anxiety about these dalliances gnawed at his conscience. How could he and his fiancée promise to be monogamous for a lifetime if they were already struggling to stay loyal to each other? Did their momentary lapses of judgment spell bigger problems for their union?
For help answering these questions, Seth and his partner went to Esther Perel, a Belgian-born psychotherapist who is renowned for her work with couples. Her two TED talks – about the challenge of maintaining passion in long-term relationships and the temptations of infidelity – have been viewed over 15m times. Her bestselling 2006 book “Mating in Captivity”, translated into 26 languages, skilfully examined our conflicting needs for domestic security and erotic novelty. Recently she has taken her work further, into more controversial terrain. Her forthcoming book “The State of Affairs”, expected in late 2017, addresses the thorny matter of why people stray and how we should handle it when they do. When Perel is not seeing clients in New York, she is travelling the world speaking to packed conferences and ideas festivals about the elusiveness of desire in otherwise contented relationships. After Seth saw Perel speak at one such conference, he sought her out for guidance with his fiancée.