Michel Foucault is the commonly acknowledged forerunner in the conversation around discourses of sexuality.
In his History of Sexuality Vol. 1 (originally published in French in 1984), Foucault takes to task the "repressive hypothesis." While many believe that we live in a society that thinks of sex as a taboo topic that is not discussed in polite company, Foucault points out that we actually live in a culture in which discourses of sexuality compel individual subjects to speak about their desires and practices.
The result of this dynamic is a fully developed taxonomic system of desires that count as normal and abnormal and an atmosphere in which individuals can be monitored, controlled, isolated, and even cured based on concepts of healthy and pathological sexual desire.