Polyamory is the desire, practice, or acceptance of having more than one loving, intimate relationship at a time with the full knowledge and consent of everyone involved, and is sometimes described as consensual, ethical, or responsible non-monogamy.
The defining characteristic of polyamory is belief in the possibility of, and value of, multiple romantic loving relationships carried out with the knowledge and consent of all partners concerned. What distinguishes polyamory from traditional forms of non-monogamy (i.e. cheating) is an ideology that openness, goodwill, intense communication, and ethical behavior should prevail among all the parties involved. Some consider polyamory to be, at its root, the generalization of romantic couple-love beyond two people into something larger.
The expression “open relationship” denotes a relationship in which participants may have sexual connections with others. When a married couple makes such an agreement, it may be termed an “open marriage”. Some forms of polyamorous relationship are not open (e.g. polyfidelity). And some open relationships may be open only sexually, while exclusive emotionally. However, there is broad overlap between open relationships and polyamory.
It is possible for a person with polyamorous relationships to also engage in casual sex, traditional swinging, and other open relationships. Sometimes polyamorous people have been known to engage in infidelities or secret affairs, although this is no better accepted in polyamorous communities than in monogamous ones.

Tags: Psychology