This paper discusses emotions as mediators in business-to-business relationships which is an understudied topic. Yet within consumer marketing, emotions have been widely studied, and calls have been made for business relationship research to take account of managers' emotions. This study addresses the gap by firstly establishing the relevance of emotions in problematic business relationships and secondly showing how emotions are a major component in determining the outcomes of the problematic relationships. Interview data in the form of narratives describing problematic relationships is analyzed and identifies both the emotions experienced by participants and their role in the future course of the business relationship. © 2011 Elsevier Inc.