What emotions do investigators feel during an interview? What sets them off? How are these emotions visible? What do they reveal about the investigative relationship and the research subject? This article suggests answers to these questions. Starting from the postulate that affects reveal social situations, we questioned their effects within a collective research project on learning sexuality. We were inspired by a feminist epistemology of point of view and by the concept of emotional work in order to show in this article how allowing for the investigators’ affects before, during and after the interview enables us to limit research bias and to strengthen a position of reflective investigation.