This study aimed to better understand how couples involvement with SASA!, a violence against women and HIV-related community mobilisation intervention, influenced processes of change in relationships. Qualitative data were collected from each partner in separate interviews. Findings suggested that SASA! engagement contributed to degrees of change at the individual and relationship levels. SASA! activities, such as reflection around healthy relationships and communication skills, led to more positive interactions among couples, reducing conflict and intimate partner violence (IPV). This study recommends that IPV prevention programmes may benefit from including relationship skills building and support within community mobilisation interventions.