Understanding Infidelity: Psychological Insights on Cheating, Boundaries, and Recovery

Overview

In this episode of the Speaking of Psychology podcast, host Kim Mills speaks with Dr. Galena Rhodes about infidelity, including definitions, prevalence, and the impact on relationships. The conversation covers the influence of technology, differences in reactions, and how psychologists support couples in recovery. The discussion also explores the role of AI and chatbot companions in modern dating and relationships.

Key insights

• Infidelity is defined by betrayed trust and broken expectations, which can be spoken or unspoken and evolve with technology.
• Cheating is not limited to physical acts; emotionally intimate connections online or via apps can also qualify as betrayal depending on couple agreements.
• Research finds similar rates of infidelity across genders when definitions are broadened to include online and non physical forms, with emotional vs sexual focuses differing by individuals.
• Therapeutic approaches view infidelity as a form of trauma and use structured stages to help couples assess impact, understand causes, and redefine their relationship.

Introduction

The podcast examines the painful experience of discovering infidelity and what psychological science reveals about why people cheat and what happens to relationships afterward. The host and Dr. Galena Rhodes discuss how the boundary between what counts as infidelity is changing in the age of dating apps, social media, and chatbot companions. Rhodes is a research professor of psychology and director of the Institute for Relationship Science at the University of Denver, with a clinical practice and a focus on relationship stability and education programs. The exchange is framed to connect research findings with practical guidance for individuals and couples confronting betrayal.

Defining Infidelity in a Changing World

Rhodes emphasizes that infidelity is dynamic and context dependent. There is no single universal definition; rather, it is defined by a betrayal of trust and a violation of shared expectations, spoken or unspoken. The conversation touches on the idea that some confessions, like Jimmy Carter’s emotionally charged disclosure about fidelity, revolve around boundary crossing and perceived betrayal, even if the boundary is not explicitly codified. The discussion also addresses modern boundary concepts such as work spouses or work husbands, which may entail close collaboration but require clear conversations about what counts as crossing lines and what constitutes emotional or physical intimacy that jeopardizes the primary relationship.

Infidelity as a Behavioral Phenomenon in the Digital Era

The episode reviews how technology expands opportunities for connection and how that shapes the likelihood and perception of infidelity. Rhodes notes that broader definitions of cheating now include emotionally intimate online relationships, which can occur even when partners do not meet in person. She also discusses how online visibility can both increase opportunities for deception and create new checks in a connected world, such as shared location services that can affect trust and monitoring dynamics within a relationship.

Prevalence and Demographic Patterns

Research on infidelity has varied depending on how questions are asked. Traditional questions like “Have you cheated on your spouse?” yield different results than asking about sexual activity with someone other than a partner. While historical data suggested higher divorce rates in couples with infidelity, the actual relationship between infidelity and divorce is nuanced. Rhodes explains that most research has focused on married couples, while many people are in nonmarital relationships that also experience infidelity in different forms. The takeaway is that infidelity happens across relationship types, and demographic differences are not consistently reliable due to the secrecy surrounding cheating and variations in definitions across studies.

Why People Cheat: A Complex Set of Factors

Rhodes highlights that multiple factors contribute to infidelity, including relationship dissatisfaction, boredom, and a desire to reconnect with someone who becomes salient in the moment. Importantly, she emphasizes the role of availability: a partner may encounter someone they find compelling, and over time a betrayal can unfold. The narrative often used in therapy to justify cheating may be a revision of behavior, reflecting how individuals make sense of actions rather than a simple causal link to unhappiness. The opportunity structure can thus be as important as inner dissatisfaction in predicting infidelity.

Predicting Infidelity and Serial Relationships

Although psychology cannot reliably “predict” who will cheat, Rhodes discusses early indicators such as increased alternative monitoring, which involves paying more attention to potential partners outside the primary relationship. This shift in attention can precede infidelity and is linked to commitment levels. Additionally, research shows a pattern where individuals who cheated in one relationship are more likely to cheat in subsequent partnerships, and those who were cheated on previously may experience similar experiences again. Rhodes suggests these patterns reflect internal relationship schemas that influence how people select partners and evaluate their own needs and boundaries.

Cheating, AI, and Chatbots in Relationships

The podcast also engages with the emerging topic of AI and chatbot relationships. Rhodes argues that true human connection remains central in psychology, and while AI could assist in learning about relationships, meaningful connections with nonhuman entities raise ethical and emotional considerations. She cautions that investing deeply in chatbot relationships can threaten the sense of betrayal and neglect within a primary relationship, especially when personal disclosures and emotional support expectations are misaligned with their role in a partnership.

Therapeutic Approaches: A Structured Model for Postinfidelity Healing

Rhodes describes a model of therapy for couples dealing with infidelity created by colleagues Christy Gordon, Don Bauckham, and Doug Snyder. The model unfolds in three stages. First is the impact stage, which focuses on containing the damage after the affair and determining how to discuss it without spiraling into family dynamics that amplify the betrayal. The second stage seeks to understand why the affair happened, exploring motivations, access to the other partner, and the affected partner’s experience. The third stage addresses the future of the relationship, including whether the couple will stay together or separate, how to redefine their relationship, and how to manage co parenting if applicable. The model frames infidelity as a trauma, acknowledging that hurt partners may experience trauma responses while the partner who engaged in the affair may also endure pain in ending the affair and seeking reconnection. Rhodes emphasizes that the journey through these stages can help couples establish new boundaries, improve communication, and create healthier patterns to reduce the probability of a recurrence.

Looking Ahead: AI in Relationship Education and the Podcast’s Questions

In closing, Rhodes shares current research interests in how people use AI to learn about relationships and the potential benefits and risks associated with AI-driven guidance. She believes AI can elevate relationship education when used thoughtfully and with attention to ethical considerations and evidence-based practices. The podcast ends with a note about ongoing work in AI-assisted content curation and education for relationships, inviting listeners to consider how technology might support wise decisions about staying with or leaving a partner, and how to navigate the complexities of modern intimate life.