Abstract: While philosophers sometimes identify betrayal as a reactive attitude specifically associated with broken trust, there has been relatively little sustained analysis of this attitude in the relevant literature. In this talk, I defend a particular view of (what I will refer to as) affective betrayal. I articulate the attitude's key marks, disentangle it from related emotions and emotional processes, and examine its roles in extant accounts of blame and forgiveness. As I will argue, affective betrayal has a distinctive type of normative significance and calls for a distinctive type of interpersonal repair.