When there are desire discrepancies between couples, women are often identified as the partner with less sexual desire. Yet the experience of desire may be different for men and women, and the expectation that desire should be equally matched can create feelings of frustration and rejection. The right question may not be "Why doesn't she want?" but rather, "What does she want and how does she want it?" In this episode we discuss the fluidity of female desire, how biological and hormonal factors play a role, the differences between spontaneous and responsive desire, and the difference between cognitive motivation and biological drive.