It is known from research that romantic relationships may, under certain circumstances, serve as a training ground benefiting subsequent relational experiences and development. This longitudinal multiple-case study focuses on the previously unexplored area of the course and processes of individuals’ perceived romantic relationship-induced learning (RRIL) and positive change over time. Four young women participated in in-depth interviews twice, with a 3-year interval between interviews. The study employed reflexive thematic data analysis, focusing on participants’ perceptions of processes and circumstances of RRIL. The themes developed in the analysis describe phenomena such as desired but unsuccessful change, catalysts for growth, unconscious change, or deliberate alteration of external conditions to achieve the desired change. The study’s findings can inform therapeutic practice and couple or school interventions promoting individuals’ capability for growth resulting from romantic relationships. Exploring the experiences of RRIL over time informs broader research into circumstances, processes, and regulations that foster individuals’ ability to use relational experiences to their advantage.