In this study, the social experiences of a young adult growing up as an only-child were explored. A single case study with a female only-child, 23 years of age was used to elicit the themes related to these social experiences. The conceptual framework utilised for this study included the concepts of social identity, social relations and social learning, which incorporated the various social agents and contexts explored in this study. Data was generated through multiple sessions, which consisted of the participant’s life story, people and places maps, as well as unstructured and semi-structured interviews. In addition, field notes and observations were recorded in a reflective journal. The data was analysed and interpreted through thematic analysis, which involved an in-depth selection of themes evident in the participant’s written and verbal expressions. The results of the study were presented in the form of themes, subthemes and categories depicting the social experiences of the participant. The primary themes that seemed to have influenced the social experiences of the participant were her relationships (specifically that with her primary caregivers) and her experiences (attached to these relationships). This study yielded an additional category, which can be seen as contributing to the literature on the social experiences of only-children. This category focused on the cultural influences of the participants’ family, which seemed to be significant in shaping her identity.