This book is the first to focus on violent and/or 'abusive' behaviours in lesbian, gay, bisexual and/or transgender, non-binary gender or genderqueer people's intimate relationships. It provides fresh empirical data from a comprehensive mixed-methods study and novel theoretical insights to destabilise and queer existing narratives about intimate partner violence and abuse (IPVA). Key to the analysis, the book argues, is the extent to which Michael Johnson's landmark typology of IPVA can be used to make sense of the survey data and accounts of 'abusive' behaviours given by LGB and/or T+ participants. As well as calling for IPVA scholars to challenge heteronormativity and cisnormativity and improve IPVA measurement, this book offers guidance and a new tool to assist practitioners from a variety of relationships services with identifying victims/survivors and perpetrators in LGB and/or T+ people's relationships. It will appeal to academics and practitioners in the field of domestic violence and abuse.