This article examines the transformation of sexual meanings, attitudes, norms, and practices surrounding depletion and pollution across decades among the Sambia of Papua New Guinea. In the premodern village, all sexual intercourse, whether with boy-initiates or women, was ritualized and ultimately controlled by the men's secret society. Intimate consumption refers traditionally to a symbolic complex of beliefs, concepts, emotions, and ritual experiences involving sexuality, bodily health, social relationships, and gendered politics. But it also covers sexual anxieties corresponding to the transfer and loss of bodily fluids via the perceived depletion and pollution of self and body. For adult men, the sense of intimate consumption requires repeated substance replenishment and purification. Intimate consumption made oral and vaginal sex highly rule-bound, taboo laden, and intensely regulated in terms of the meaning, scope, duration, and intended goals of sexual exchange. Pacification, colonization, out-migration, Seventh Day Adventist (SDA) Christianity, and primary schooling in the Sambia Valley over a period of decades instigated social transformations that challenged and wore down this system of sexual regulation. Thus, the transition from ritual to non-ritual practices, i.e., more individualistic sexual relationships, highlight narratives of change in the Sambia sexuality. With the demise of ritual initiation in the 1980s and 1990s, and the appearance of HIV and SikAids in the Sambia Valley, explicit ritual sexual techniques were no longer socialized. Modernity (in the sense of a set of policies, attitudes, and rules introduced through institutions such as the government community school) and SDA church sociality influenced both the pace and form of this sexual transformation. Among the greatest changes was the expansion of female agency and sexual autonomy, and personal decision-making vis-à-vis especially marriage and also romance, courtship, and sex. Notably, oral sex, once universal and mandatory, largely disappeared from Sambia intimate relations. Today, spousal intimacy reveals a different set of more 'modern' meanings and behaviors compared to two generations ago, e.g., more mutualistic and companionate. Intimate consumption remains a worry for certain Sambia young men and women today however, influenced in part by the rise of the HIV pandemic, mobility, and the absence of normative narratives of sexuality in villages and town settlements. This creates public spaces wherein new sexual subjects have emerged in the villages and urban settlements within the Sambia Valley and in settlements throughout PNG.