The purpose of this paper is to determine the degree of uniformity in the narrative roles that male and female characters carry out in the relationships in El adulterio como vocacion y otros cuentos (2012), a collection of six short stories written by the Spanish author and journalist Juan José Millás. The analysis is based on the theory of narrative roles, developed by the French literary scholar Claude Bremond in Logique du récit (1973). The analysis concludes that even though some recurrences can be discerned, the two sexes do not have fixed roles throughout the stories. In the first three stories the women tend to be degraders and beneficiaries, while the men shoulder the role of a victim. In the last two stories of the book this situation is reversed. The fourth story differs somewhat from the rest, since both man and woman are mainly beneficiaries.