Non-monogamyNon-monogamy (or nonmonogamy) is an umbrella term for every practice or philosophy of non-dyadic intimate relationship that does not strictly hew to the standards of monogamy, particularly that of having only one person with whom to exchange sex, love, and/or affection. In that sense, "nonmonogamy" may be accurately applied to extramarital sex, group marriage, or polyamory.
InfidelityInfidelity (synonyms include cheating, straying, adultery, being unfaithful, two-timing, or having an affair) is a violation of a couple's emotional and/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. Infidelity can cause psychological damage, including feelings of rage and betrayal, low sexual and personal confidence, and even post-traumatic stress disorder.
Open marriageOpen marriage is a form of non-monogamy in which the partners of a dyadic marriage agree that each may engage in extramarital sexual relationships, without this being regarded by them as infidelity, and consider or establish an open relationship despite the implied monogamy of marriage. There are variant forms of open marriage such as swinging and polyamory, each with the partners having varying levels of input into their spouse's activities.
DatingDating is a stage of romantic relationships in which two individuals engage in an activity together, most often with the intention of evaluating each other's suitability as a partner in a future intimate relationship. It falls into the category of courtship, consisting of social events carried out by the couple either alone or with others. The meaning of the word dating shifted after the sexual revolution to include a more informal use referring to a romantic, sexual relationship itself beyond an introductory or trial stage, but prior to marriage.
Adultèrevignette|droite|Madame reçoit, Rémy Cogghe (1908). L’adultère (nom masculin) est . Couramment, on parle également d’infidélité. L'adultère suppose donc non seulement une relation extraconjugale, mais aussi que la société et le contexte dans lesquels elle se déroule exige l’exclusivité sexuelle des conjoints. L'homme avec qui une personne, qui n'est pas son conjoint, a des relations sexuelles est appelé amant. La femme avec qui une personne, qui n'est pas son conjoint, a des relations sexuelles est appelée maîtresse ou amante.
Polyamourvignette|Drapeau créé par Red Howell en 2022. Ce design a été sélectionné parmi quatre via un sondage en ligne conduit par le blog PolyamProud en novembre 2022. vignette|Drapeau du polyamour, créé par Jim Evans en 1995. Le polyamour (de l'anglais polyamory), ou pluriamour, est une orientation et une éthique des relations amoureuses dans laquelle les partenaires peuvent être en relation amoureuse avec plus d'une personne, avec le consentement éclairé de toutes les personnes concernées.
