This chapter explores intentionality through the lens of cultural psychology, emphasizing that mental processes, including desires, intentions, and meaning-making, are not isolated phenomena, but co-constructed through social interaction. A central focus is meta-intentionality; the desire for another person to want what one wants. Rather than treating autonomy and influence as opposing forces, the chapter examines how shared desires emerge in relational contexts, particularly within psychotherapy. Here, meta-intentionality plays a subtle but critical role in shaping therapist-client dynamics, raising profound ethical and epistemological questions. For example, when a therapist desires change or insight for a client, at what point does this desire support care, and when might it become harmful? The chapter argues that therapeutic relationships are ethically charged spaces where meaning is co-created, not dictated. Psychological diagnoses, shaped by cultural and normative assumptions, can reinforce hierarchical roles that risk undermining shared intentionality. By situating psychotherapy as a dialogical and co-authored process, the chapter advocates for a meta-intentional ethics that foregrounds care, mutuality, and critical reflection on how we shape one another’s desires.