Discovering that a partner has had an affair can feel like an earthquake. Long after the first jolt, emotional aftershocks can make it difficult to be there for family, manage daily life, and think clearly about options. From award-winning couple therapists, this compassionate guide has already provided support and expert advice to thousands of readers. Updated throughout, the second edition draws on the latest research and is filled with vivid stories of diverse couples struggling with infidelity in all its forms—sexual or emotional, in-person or online. The book offers exercises and tips for processing what happened, coping with anger and mistrust, and mapping a way to move forward, whether separately or together.