In her book "Bonk: The Curious Coupling of Science and Sex," Mary Roach explores the complexities of sexual relationships and the differences between heterosexual and homosexual dynamics. She highlights a significant disadvantage faced by heterosexual couples, pointing out that they lack what she refers to as "gender empathy." This concept suggests that the understanding and shared experiences often found in same-sex relationships enhance empathy between partners.

Roach argues that gay couples, benefiting from mutual comprehension of gender issues, tend to have a greater capacity to treat their partners as they themselves would wish to be treated. This mutual understanding fosters a more empathetic relationship, which may not be as readily available to heterosexual pairs. Overall, Roach's insights raise intriguing questions about how gender dynamics affect relationship behaviors and emotional connections.