This chapter begins by clarifying the Principle of Informed Consent, which has two components: Genuine agreement to sexual activity is knowledgeable and free. Soble defends the thesis that the principle states necessary and sufficient conditions for the morality of sexual activity (Igor Primoratz). The “Dark Desires” argument (Seiriol Morgan) that consent is not sufficient is defective but compels recognition of a generally ignored feature of “informed,” even by theorists for whom dialogue before and during sex is crucial. Reciprocal knowledge of why the persons want to engage in sex, if they do, should be attained while discussing what they want to do. Vicious motivations do not make sexual activity wrong; not knowing them makes sexual acts wrong; knowing them makes free acts permissible.