There is some funny couples or more of it in problematic relationships…

Cheating is an act of lying, deception, fraud, trickery, imposture, or imposition. Cheating characteristically is employed to create an unfair advantage, usually in one’s own interest, and often at the expense of others, Cheating implies the breaking of rules.

The term “cheating” is less applicable to the breaking of laws, as illegal activities are referred to by specific legal terminology such as fraud or corruption. Cheating is a primordial economic act: getting more for less, often used when referring to marital infidelity. A person who is guilty of cheating is generally referred to as a cheat, or a cheater.

Personal relationships
With regard to human relationships, couples tend to expect sexual monogamy of each other. If so, then cheating commonly refers to forms of infidelity, particularly adultery.[6] However, there are other divisions of infidelity, which may be emotional.

Cheating by thinking of, touching and talking with someone you are attracted to may be equally damaging to one of the parties. Emotional cheating may be correlated to that of emotional abuse, which to date is treated seriously in a court of law as physical cheating.

With the expansion of understanding of other cultures, there is a wide spectrum of what cheating means. When in a committed relationship, the definition of cheating is based on both parties opinions and both parties may redefine their understanding to match the party at an either lower or higher extreme of this definition. Some couples simply believe that cheating constitutes doing anything, whether verbal or physical, that one would not do in front of their significant other.

Such examples would include: expressing attraction to another person, electronic communications, kissing, making out, and sexual relations.

Many people consider cheating to be any violation of the mutually agreed-upon rules or boundaries of a relationship, which may or may not include sexual monogamy.

For example, in some polyamorous relationships, the concepts of commitment and fidelity do not necessarily hinge on complete sexual or emotional monogamy.

Whether polyamorous or monogamous, the boundaries to which people agree vary widely, and sometimes these boundaries evolve within each relationship.
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An interpersonal relationship is an association between two or more people that may range from fleeting to enduring. This association may be based on limerence, love and liking, regular business interactions, or some other type of social commitment. Interpersonal relationships take place in a great variety of contexts, such as family, friends, marriage, associates, work, clubs, neighborhoods, and places of worship.

They may be regulated by law, custom, or mutual agreement, and are the basis of social groups and society as a whole. Although humans are fundamentally social creatures, interpersonal relationships are not always healthy. Examples of unhealthy relationships include abusive relationships and codependence.

A relationship is normally viewed as a connection between two individuals, such as a romantic or intimate relationship, or a parent-child relationship. Individuals can also have relationships with groups of people, such as the relation between a pastor and his congregation, an uncle and a family, or a mayor and a town.

Finally, groups or even nations may have relations with each other, though this is a much broader domain than that covered under the topic of interpersonal relationships. See such articles as international relations for more information on associations between groups. Most scholarly work on relationships focuses on romantic partners in pairs or dyads.

These intimate relationships are, however, only a small subset of interpersonal relationships. Interpersonal relationships also can include friendships, such as relationships involving individuals providing relational care to marginalized persons.

These relationships usually involve some level of interdependence. People in a relationship tend to influence each other, share their thoughts and feelings, and engage in activities together. Because of this interdependence, most things that change or impact one member of the relationship will have some level of impact on the other member.

The study of interpersonal relationships involves several branches of the social sciences, including such disciplines as sociology, psychology, anthropology, and social work.
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