An open marriage, sometimes referred to as consensual non-monogamy or CNM, is a type of marriage wherein the involved parties unequivocally consent to their partners entering or engaging in romantic and/or sexual relationships with other people.

What is meant by open relationship?

An open relationship means having more than one romantic or sexual partner at a time. Its an arrangement that both parties agree is non-exclusive or non-monogamous. As one or both partners engage in romantic or sexual activities outside the relationship, the arrangements agreement aspect is key.

Are open marriages common?

It is said that less than 1% of couples are in open marriages, Neil explains. Twenty-percent of couples have experimented with consensual non monogamy [but] open marriage has a 92% failure rate.