Infidelity

A new study reveals that women experience greater romantic jealousy when a potential rival has highly feminine facial features. While this effect occurs in both heterosexual and lesbian women, it is significantly stronger among straight women.

A new study published in Personal Relationships suggests that a person's level of relationship jealousy remains fairly steady over time with a specific partner, but can shift significantly when they enter a new relationship.

Discover how the massive Ashley Madison data leak allowed psychologists to study the real reasons people seek affairs and how society judges them.

Researchers investigating the roots of infidelity found that a personality trait known as sociosexuality plays a critical mediating role in how unhappy men process the temptation to cheat on their partners.

Researchers analyzing online posts found that cheaters use risk management and rationalizations similar to criminals.

New research suggests that young adults who witnessed parental infidelity are more likely to consider cheating themselves. The study also links infidelity intentions to avoidant attachment styles.

A large study finds that reactions to infidelity vary not only by sex but also by sexual orientation and psychological traits. Traits like masculinity, femininity, and sexual attraction appear to shape jealousy in more flexible, dimensional ways than once thought.

After suffering a rare type of stroke, a woman with no psychiatric history became convinced her husband was cheating. This case reveals how brain damage can trigger Othello syndrome, a form of delusional jealousy with potentially violent consequences.

The online shaming of unfaithful celebrities is a modern spectacle, but why do some join in while others don't? Researchers exploring this puzzle found a key predictor: a belief in a just world, which unexpectedly dampens outrage and blame.

Experiencing romantic desire for someone outside a relationship can trigger subtle psychological shifts. A new study reveals that these feelings influence what people buy—encouraging men to seek shared experiences and women to opt for practical, lasting possessions.

Mindfulness in marriage may help reduce the emotional strain of divorce-related fears, especially among those with higher infidelity tendencies, according to a new study involving over 400 married individuals.

Jealousy is a powerful force in relationships. New research finds that imagining a partner’s infidelity not only increases jealousy but also drives people to use both loving and manipulative tactics to keep their partner close.

New mate poaching research shed light on how personality shapes the way people approach the challenge of wooing an already attached romantic parnter.

Both men and women tend to spend more on gifts for committed partners than for affair partners, countering the stereotype that men lavish more on extramarital relationships. Gift-giving primarily reinforces long-term relationships.

A new study has found that individuals prone to moral disengagement reported more cheating, suspected their partners of infidelity more often, and had lower relationship satisfaction.