Open marriage typically refers to a marriage in which the partners agree that each may engage in extramarital sexual relationships, without this being regarded as infidelity. There are many different styles of open marriage (such as swinging and polyamory), each with the partners having varying levels of input on their spouse's activities. Open marriages place high value on honesty, especially of needs and wants.^{[citation needed]}

The origins of the term open marriage remain obscure. Researchers in the 1960s used the term open marriage to describe individual freedom in choosing marriage partners. Closed marriage meant individuals had to marry someone based on social prohibitions and social prescriptions. Open marriage meant individuals could choose to marry someone based on personal preferences.

Nena O'Neill and George O'Neill changed the meaning of the term with the 1972 publication of their book Open Marriage, which sold over 1.5 million copies. The O'Neills conceived open marriage as one in which each partner has room for personal growth and can develop outside friendships. Most chapters in the book dealt with non-controversial approaches to revitalizing marriage in areas of trust, role flexibility, communication, identity, and equality. Chapter 16, entitled "Love Without Jealousy", devoted 20 pages to the proposition that an open marriage could include some forms of sexuality with other partners. These concepts entered the cultural consciousness and the term "open marriage" became a synonym for sexually non-monogamous marriage, much to the regret of the O'Neills. In the 1977 publication of The Marriage Premise, Nena O'Neill advocated sexual fidelity in the chapter of that name. By then however, the concept of open marriage as sexually non-monogamous marriage had gained a life of its own.

Margaret Cho (born December 5, 1968) is an American comedian, fashion designer, actress, author, and singer-songwriter. Cho, of Korean descent, is best known for her stand-up routines, through which she critiques social and political problems, especially those pertaining to race and sexuality. She has also directed and appeared in music videos and has her own clothing line. She has frequently supported LGBT rights and has won awards for her humanitarian efforts on behalf of women, Asians, and the LGBT community.

As an actress she has played more serious parts, such as Charlene Lee in It's My Party and that of John Travolta's FBI colleague in the action movie Face/Off. She is part of the TV series Drop Dead Diva on Lifetime Television, playing the role of Teri Lee, a paralegal assistant.

Cho was born into a Korean family in San Francisco, California. She grew up in a racially diverse neighborhood in the 1970s and 1980s, which she described as a community of "old hippies, ex-druggies, burn-outs from the '60s, drag queens, Chinese people, and Koreans. To say it was a melting pot — that's the least of it. It was a really confusing, enlightening, wonderful time."

Shirley MacLean Beaty (born April 24, 1934), known professionally as Shirley MacLaine, is an American film and theater actress, singer, dancer, activist and author, well known for her beliefs in New Age spirituality and reincarnation. She has written a large number of autobiographical works, many dealing with her spiritual beliefs as well as her Hollywood career. She was nominated for an Academy Award five times before winning the Academy Award for Best Actress in 1983 for her role in Terms of Endearment. Her younger brother is Warren Beatty.

Named after Shirley Temple, MacLaine was born in Richmond, Virginia. Her father, Ira Owens Beaty, was a professor of psychology, public school administrator, and real estate agent, and her mother, Kathlyn Corinne (née MacLean), was a drama teacher originally from Wolfville, Nova Scotia, Canada; MacLaine's grandparents were also teachers.The family was devoutly Baptist. Her uncle (her mother's brother-in-law) was A.A. MacLeod, a Communist member of the Ontario legislature in the 1940s.