Sexual infidelity in a relationship often triggers a cascade of difficult and painful emotions in those who have been betrayed. After discovery, those who have been betrayed often can't sleep or eat. They can't stop thinking about what their partner did, and they begin avoiding people and places that they used to enjoy. Their trust in others goes down and they question themselves, often believing that there is something wrong with them. In many cases, they struggle with depression and anxiety. Finally, they experience anger in ways that surprise even themselves. After more than 10 years of...