Infidelity
Cheating, adultery, or having an affair
Infidelity (synonyms include cheating, having an affair, adultery, being unfaithful, non-consensual non-monogamy, straying or two-timing) is a violation of a couple's emotional or sexual exclusivity that commonly results in feelings of anger, sexual jealousy, and rivalry. What constitutes infidelity depends on expectations within the relationship. In marital relationships, exclusivity is commonly assumed.
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