We usually think about intimacy as to do with our private, personal lives, as describing feelings and relationships that are most inner, most 'inward to one's personhood' (McGlotten, 2013, p. 1), and concerned with relationships that are most important to us. Sociologists have theorised intimacy as centrally involving mutual self-disclosure (Giddens, 1992), time spent in co-presence, physical affection, and acts of practical care (Jameison, 2011). But, as queer theory and sexuality studies tell us, intimacy is very much socially sanctioned, defined by institutions, laws, and normative social pressures (Berlant, 1998; Plummer, 2003). The sociology of intimacy helps illuminate what, specifically and empirically, is involved in the doing of intimacy in different places and cultures, and for different genders, classes, and social groups. Queer and feminist critical cultural theorists like Berlant have explained how, in late-modern cultures, having a 'life' has become equated with having an intimate life (Berlant, 1998, p. 282). Further, as Cefai and Couldry note, 'What queer theory has taught us is that heteronormativity shapes what can appear to us as "intimate" even in settings where questions of sexual identity are typically not articulated as such' (2017, p. 2). Understandings of intimacy are culturally and socially specific, rather than 'global' or 'universal' (Jameison, 2011). However, in many places right now intimacy names 'the affective encounters with others that often matter most' (McGlotten, 2013, p. 1). From the perspective of poststructuralist queer and feminist theory, producing intimacy can be understood as part of subjectification processes that centrally involve the hierarchical ordering of relationships and psychic concerns, in socially legible ways, in order to make sense of ourselves and those around us. How social media figures in such processes of psychically and materially ordering relationships and shaping what appears as intimate is part of what we consider in this collection. In this chapter, and this collection more broadly, we are interested in how social media practices challenge and disrupt, as well as how they reinforce and concretise (hetero)normative notions of intimacy as a concept that creates boundaries around certain relationships and ethics of care. Social media are now centrally involved in processes whereby pedagogies of intimate life as life itself are learnt, reproduced, given value, contested, and exploited.