Frictionless Love: Associations Between AI Companion Roles and Behavioral Addiction

2026-04-21

AI Summary

This study investigates how metaphorical role assignments in AI companions may contribute to behavioral addiction and ethical risks, mechanisms that remain poorly understood. Drawing on 248,830 user posts from Reddit, the research employs natural language processing and topic modeling to systematically identify ten distinct metaphorical roles of AI companions for the first time, and examines their associations with user interaction patterns, perceived benefits and drawbacks, and behavioral addiction indicators. Findings reveal that the “soulmate” role is strongly linked to emotional dependency and psychological distress, whereas utilitarian roles such as “coach” or “guardian,” despite their functional utility, are more frequently associated with disruptions to daily life and harm to real-world relationships. The results underscore role design as a critical ethical dimension shaping user behavior and addiction vulnerability.

Technology Category

• Humans and AI: Game Design — Virtual Humans, NPCs and Autonomous Characters
• Philosophy and Ethics of AI: Safety, Robustness & Trustworthiness
• Application Domains: Humanities & Computational Social Science

Application Category

• User Modeling, Personalization and Recommendation: Accountability, Transparency, and Ethics for personalization
• Economics, Online Markets and Human Computation: Fairness and ethical considerations in crowd work and in human-in-the-loop AI systems
• Semantics and Knowledge: Data modeling to support human-machine intelligence, including LLMs agents, intelligent system behavior, explanations, and user-friendly interactions

Abstract

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.

Problem

• AI companion
• metaphorical roles
• behavioral addiction
• social interaction
• ethical design

Innovation

• AI companion roles
• behavioral addiction
• metaphorical roles
• human-AI interaction
• ethical AI design