Summary
The transcript discusses the theories behind why women cheat, including the idea of a dual mating strategy. The costs of infidelity for women are explored, including violence, reputational damage, and relationship breakdowns. The 'good genes' theory proposes that markers of good genetic quality include masculine features and symmetry. However, failures to replicate the initial findings and the discovery that women in affairs often develop emotional attachments to their affair partners have led to doubts about the dual mating strategy theory.