Hide your partner! Women in some cultures compete romantically against both sexes. The fa'afafine in Samoa, and muxes in Southern Mexico's Istmo Zapotec, are widely accepted "third gender" males. These feminine males compete directly with women, as they both vie for the romantic attention of desirable men. The flirtations of fa'afafine and muxes can even entice married men away from their wives! Tune in to this episode with Post-Doctoral Fellow, Dr. Scott Semenya, to learn more about mate competition between the sexes, and how the Samoan fa'afafine and Istmo Zapotec muxes impact heterosexual mating dynamics in their cultures. To learn more or contact Scott, ResearchGate: https://www.researchgate.net/profile/Scott-Semenyna Twitter: @scott_semenyna Email: scott.semenya@uleth.ca