Accordingly, they include parallel entitlements, obligations, and limitations.
Swingers and polyamorous people alike might engage in secret infidelities, though this is no more acceptable than in monogamy.
Kerista was a new religion that was started in New York City in 1956 by John Peltz "Bro Jud" Presmont; throughout much of its history, Kerista was centered on the ideals of polyfidelity and creation of intentional communities.
Within this model, a hierarchy may be fluid and vague, or nonexistent.
There is a cultural divide between the polyamorous and swinger communities, the former emphasizing the emotional and egalitarian aspects of plural relationships and the latter emphasizing sexual non-monogamy and emotional monogamy.
On August 29, 2017, the Council on Biblical Manhood and Womanhood released a manifesto on human sexuality known as the "Nashville Statement".
The statement was signed by 150 evangelical leaders, and includes 14 points of belief.
In 2017 John Alejandro Rodriguez, Victor Hugo Prada, and Manuel Jose Bermudez were married in Colombia, thus becoming Colombia's first polyamorous family to have a legally recognized relationship.
In many jurisdictions where same-sex couples can access civil unions or registered partnerships, these are often intended as parallel institutions to that of heterosexual monogamous marriage.
Polyamorous relationships can be open, where the relational partners agree to permit romantic or sexual relationships with other people, or closed, where those involved do not engage in relationships outside of the defined set of committed partners.
The practice of engaging in closed polyamorous relationships is sometimes called to indicate a hierarchy of different relationships or the place of each relationship in a person's life.
Although many sources define polyamory as a sexual and/or romantic relationship practice or form, the North american version of the OED declares it a philosophy or state, and some believe that it should be classified an orientation or identity (like sexual orientation or gender identity).