From a social work systemic perspective, this article examines the construction and perception of conjugal boundaries within the stepfamily. In the context of an exploratory qualitative research, the narratives of 12 step-parents who are living or lived in a stepfamily were analyzed. The results suggest that the conjugal experience is intrinsically linked to the functioning of the boundaries between the different subsystems of a stepfamily. The conjugal experience is more positive for step-parents whose conjugal boundaries are distinct and defined. These step-parents maintain a stronger feeling of love, feel more legitimacy about their role within the family, and put in place strategies that allow them to better regulate their expectations regarding the relationship they have with all members of the family.