# What are the psychological reasons behind why people cheat in relationships?

itraveledthere.io · August 4, 2026

> Emotional dissatisfaction is a significant predictor of infidelity; studies show that individuals in unsatisfactory relationships often look outside...

Emotional dissatisfaction is a significant predictor of infidelity; studies show that individuals in unsatisfactory relationships often look outside their partnership to meet unmet emotional needs.

Research indicates that around 20% of married individuals report having cheated at some point, shedding light on the prevalence of infidelity across different relationship types.

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The concept of “opportunity” plays a key role in infidelity, where individuals who find themselves in situations that facilitate temptation—like business trips or social gatherings—are more likely to stray.

Feelings of low self-esteem can drive individuals to cheat, as some seek validation and affirmation outside of their primary relationship to bolster their self-worth.

Cheating can also occur due to a sense of boredom or stagnation in a relationship; individuals may seek novelty and excitement, which they feel is lacking in their existing partnership.

Attachment styles play a crucial role in relationship dynamics, with individuals who have anxious attachment styles being more likely to cheat as they often fear losing their partner and may seek attention elsewhere.

According to psychological studies, anger and revenge can motivate infidelity as individuals sometimes cheat to express dissatisfaction or retaliate against perceived wrongs in their primary relationship.

The presence of a “cheater mentality,” often characterized by risk-taking behaviors and impulsivity, can predispose individuals to infidelity, regardless of their relationship satisfaction.

Cultural and societal norms also influence cheating behaviors; research shows that in societies where infidelity is more common or not heavily stigmatized, people are more likely to engage in it.

Some studies suggest that emotional affairs—characterized by deep personal connections without sex—can be just as damaging as physical infidelity due to the emotional betrayal involved.

Personality traits, such as narcissism and sociopathy, have been linked to higher rates of infidelity, as these traits often correlate with a lack of empathy and an increased focus on self-gratification.

The “idealization” effect occurs when partners may begin to romanticize the qualities of a third party, viewing them as more exciting or supportive than their current partner, which can lead to infidelity.

Research in evolutionary psychology suggests that men may be more inclined to cheat due to biological urges to spread their genes, while women may cheat in search of higher-status partners for improved resource security.

Stress can negatively impact relationships and may lead to infidelity, as individuals under high pressure may seek escape or comfort through outside relationships.

The phenomenon of “kill the pain” cheating occurs when individuals engage in affairs as a coping mechanism to distract themselves from emotional pain or relationship difficulties.

Psychological studies show that the longer someone is in a committed relationship, the more likely they are to consider cheating, particularly if they perceive their partner as not meeting their evolving needs.

Infidelity can have long-term psychological effects, including depression, anxiety, and reduced trust in future relationships, which often stems from unresolved emotional pain or betrayal.

The Internet has transformed how infidelity is facilitated, creating new avenues for emotional and physical cheating through social media and online dating platforms, which make extramarital interactions more accessible.

The role of social circles is important; individuals are more likely to cheat if they are surrounded by friends or peers who engage in or normalize infidelity, making it more socially acceptable.

Recent psychological models suggest that infidelity can be better understood through the lens of “relationship efficacy,” where individuals assess the likelihood of success in their current partnership, influencing their decisions to cheat.

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