Although there has been much discussion about things like the causes, loss, and maintenance of sexual desire, there has been little research into the nature of sexual desire itself. Consequently, most of the discussions on these topics have gone on without any clear idea about what it is that is being discussed. Readers will be interested that at last there is a full-length book that attempts to say what sexual desire is. Further, this book takes an interdisciplinary and intercultural approach, drawing on a wide range of texts and research. Drawing on such diverse sources as psychology, philosophy, and biology, a thorough discussion of sexual desire is presented. Giles starts by showing why sexual desire is an existential problem and then follows with an examination of the nature of desire. From here the sexual process is examined and its relation to sexual desire is explored. This view of sexual desire is then used to explain the nature of romantic love, different orientations in love, and love's relation to sexual desire. It is argued that sexual desire has its roots in desires for vulnerability, care, and the experience of gender.