Infidelity

Reviewed by Tyler Woods on May 20, 2026

Infidelity is the breaking of a promise to remain faithful to a romantic partner, whether that promise was a part of marriage vows, a privately uttered agreement between lovers, or an unspoken assumption. As unthinkable as the notion of breaking such promises may be at the time they are made, infidelity is common, and when it happens, it raises thorny questions: Should you stay? Can trust be rebuilt? Or is there no choice but to pack up and move on?

Why People Cheat

For the adulterer, infidelity can be exciting and seductive, conferring feelings of renewal, rejuvenation, and joy. Infidelity is a betrayal, but it isn’t necessarily the end of love; cheating occurs even in happy relationships. The partner being betrayed, however, may feel confusion, anger, doubt, pain, and heartbreak.

What People Consider Infidelity

The line between innocent flirtation and romantic betrayal is often elastic, and many couples face conflict because partners do not share the same definition of cheating. For some, anything short of sexual contact with someone else is acceptable; for others, any attention to a potential rival is unforgivable.

Surviving Infidelity

When a partner is caught cheating, or confesses to it, it’s not necessarily the end of the relationship. One key factor determining whether a relationship can survive is whether or not the affair included emotional attachment as well as sex. In one survey, 44 percent of men who’d had affairs said it was only about sex, but only 11 percent of women reported the same.

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