Frictionless Love: Associations Between AI Companion Roles and Behavioral Addiction
This research highlights ethical design concerns for AI companions by showing how their roles influence user addiction risks, addressing a problem for developers and policymakers in responsible AI.
The study analyzed 248,830 Reddit posts to identify ten metaphorical roles of AI companions, such as soulmate and coach, and found that each role leads to distinct interactions, harms, and benefits, with soulmates linked to emotional support but also manipulation and strong attachment, while coaches are tied to practical benefits but more behavioral addiction signs like daily disruptions.
AI companion chatbots increasingly shape how people seek social and emotional connection, sometimes substituting for relationships with romantic partners, friends, teachers, or even therapists. When these systems adopt those metaphorical roles, they are not neutral: such roles structure people's ways of interacting, distribute perceived AI harms and benefits, and may reflect behavioral addiction signs. Yet these role-dependent risks remain poorly understood. We analyze 248,830 posts from seven prominent Reddit communities describing interactions with AI companions. We identify ten recurring metaphorical roles (for example, soulmate, philosopher, and coach) and show that each role supports distinct ways of interacting. We then extract the perceived AI harms and AI benefits associated with these role-specific interactions and link them to behavioral addiction signs, all of which has been inferred from the text in the posts. AI soulmate companions are associated with romance-centered ways of interacting, offering emotional support but also introducing emotional manipulation and distress, culminating in strong attachment. In contrast, AI coach and guardian companions are associated with practical benefits such as personal growth and task support, yet are nonetheless more frequently associated with behavioral addiction signs such as daily life disruptions and damage to offline relationships. These findings show that metaphorical roles are a central ethical design concern for responsible AI companions.