In this explorative study, nine stable relationships between female-to-male transsexuals and their biologically female partners were compared to an equal number of "traditional" heterosexual couples. The aim was to investigate any differences between these two groups on three aspects: satisfaction about the partner relationship, sexual satisfaction, and partnership sex typing. Data do not show any significant differences in relational and sexual satisfaction between the transsexuals' female partner and the women in the "traditional" couples. In contrast, the female-to-male transsexuals and their female partners were found to have adopted a more pronounced sex-typed partner relationship than the "traditional" couples.