Treating Compulsive Sexual Behaviour and Its Impact on Relationships is a practical guide to understanding the impact of compulsive sexual behaviour (CSB) on intimacy, trust, and emotional connection in relationships. Written from the unique dual perspective of professional expertise and lived experience, this book explores how CSB impacts individuals and couples and offers a path toward recovery, healing, and genuine connection. Providing a unique blend of clinical insight, personal storytelling, and a dedicated, practical workbook for couples, this guide provides clinicians with practical exercises, guided reflections, and strategies for communication to form the basis of therapeutic interventions, supporting couples in navigating the challenges of rebuilding trust and intimacy following the results of CSB in their relationship. Readers will benefit from accessing a clear, accessible framework for understanding CSB, while also learning key skills for immediate application to their practice. Downloadable exercises to accompany the book are available at https://www.routledge.com/9781041218418. Each exercise is self-contained, practical, and aligns directly with its corresponding chapter. These handouts can serve as clinician session tools, client homework sheets, or supervision resources. Written with a compassionate and destigmatising approach, this book is essential reading for any mental health professional working with individuals or couples impacted by CSB, such as psychotherapists, counsellors, or psychologists. It may also be of interest to individuals with lived experience of CSB.