ObjectiveThis study explored how cognitive labour as a form of unpaid, household labour is performed by people in same-gender couples.BackgroundExcessive performance of unpaid labour has been associated with several health impacts. Cognitive labour (anticipating needs, identifying options for meeting needs, making decisions and monitoring progress) is an underexamined dimension of unpaid labour which has centered on the experiences of heterosexual couples.MethodDyadic and individual interviews were carried out to explore how cognitive labour was performed in same-gender couples between March and October 2021 using an inductive methodology. Adults who were in a same-gender couple, had lived with their partner for at least six months, were not living with children were recruited largely via social media.ResultsExamining cognitive labour performance amongst same-gender couples revealed four key themes: 1) habitually fostered patterns of trust; 2) agency in redefining family; 3) barriers to cognitive harmony; and 4) facilitators to cognitive harmony. Findings regarding the relationships between themes are presented in a narrative model. Dyadic interviews allowed for deep, narratives relating to cognitive labour performance.ConclusionsThe narrative model provides new conceptual understanding of how cognitive labour is performed outside of the heteronormative sphere. Couple’s adoption of a strengths-based frame to cognitive labour performance removed the opposition inherent in gender dichotomies. These findings support calls for research to incorporate social change to build and refine theory, including how queer and feminist movements have challenged gendered and heteronormative family and household roles.