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Angelina Jolie and Brad Pitt -

Flashing back to the days of Brangelina in 2009, Angelina Jolie told German magazine Das Neue that fidelity wasn't absolutely essential for a stable relationship.

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Nick Cannon -

Having drawn a lot of attention in recent years for welcoming multiple children with different women, Nick Cannon has been open about his disillusionment with monogamy and how he found it to be a "Eurocentric concept."

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Ethan Hawke -

When he was still married to Uma Thurman, actor Ethan Hawke had a secret affair with Ryan Hawke, whom he later married. The actor told MR Porter that monogamy is a childish idea and that sexual faithfulness can't be the basis of a relationship.

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Gwyneth Paltrow and Chris Martin -

According to People, the former couple maintained an open relationship because they believed extramarital flings are part of life. They were together for 11 years.

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Scarlett Johansson -

Back in 2017, Johansson shared in a Playboy interview that monogamy isn't the key to a successful relationship. She went on to marry 'Saturday Night Live' star Colin Jost in 2020. She has previously been married to Ryan Reynolds (from 2008 to 2011) and Romain Dauriac (from 2014 to 2017).

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Shirley MacLaine and Steve Parker -

Married from 1954 to 1982, MacLaine revealed in a 2016 People magazine interview that her marriage lasted 28 years because it was open.

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Shailene Woodley -

While speaking to The New York Times in 2020, Woodley explained that she has been in both monogamous and non-monogamous relationships.

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Akon -

Coming from a polygamous Senegalese family, where his father had four wives, Akon has always been open about his views on monogamy.

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Tom Ford -

The designer and his late husband, Richard Buckley, were together for over three decades. And although they didn't have an open marriage, Ford doesn't think monogamy is his natural state.

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Hugh Grant -

Married to Anna Eberstein since 2018, the British actor told Entertainment Tonight that he doesn't believe humans should be monogamous.

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Emma Thompson and Greg Wise -

The British actress told the Daily Mail that humans are tied to certain ideals such as "happily ever after," but that there are other relationship models that work. She has been married to Greg Wise since 2003.

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Hugh Hefner (1926-2017) -

No surprise here! The Playboy mogul didn't believe in monogamy either. Back in 2009, he told E! News that "marriage is just a convenience." He expressed that "the notion that monogamy lasts forever is a wish!"

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Margaret Cho -

During an interview on 'The Real,' the comedian explained she got together with her ex-husband, Al Ridenour, because they shared the same belief that it's not possible to be sexually faithful to one person for your entire life. The couple were married between 2003 and 2015.

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Kehlani -

In 2020, singer Kehlani appeared on 'The Breakfast Club' and revealed that she had been in an open relationship with her ex YG.

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Kristen Bell -

When asked for her thoughts on monogamy during an interview with Men's Journal, Bell said that "we're not meant to be monogamous."

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Ezra Miller -

Miller came out publicly as polyamorous in a 2018 interview with Playboy, revealing that he was part of a group of lovers.

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Sienna Miller -

In a 2006 interview with Rolling Stone, after former fiancé Jude Law admitted to cheating with the children's nanny, Miller called monogamy "an overrated virtue."

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Bella Thorne -

While the trio are no longer together, Bella Thorne was publicly together with rapper Mod Sun and influencer Tana Mongeau from 2017 to 2019.

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Dolly Parton -

Married since 1966, Parton believes that infidelity is only bad if it's exposed, and that she'd rather not know if her husband cheated on her.

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Mo'Nique and Sidney Hicks -

Married since 2006, the Oscar-winning actress has publicly said she's in an open relationship with actor and producer Sidney Hicks. In 2016, they started a podcast called 'Open Relationship' to discuss their marriage and answer relationship questions.

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Indya Moore -

In 2018, the 'Pose' star opened up on Twitter about her identifying as polyamorous. Her fans praised her openness.

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Yungblud -

In 2020, musician Yungblud opened up how his ex Halsey, who is openly bisexual, helped him explore his sexual identity. He also revealed that he is polyamorous.

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Alan Cumming -

While the Scottish actor and his husband Grant Shaffer don't have an open relationship, Cumming doesn't believe monogamy is a natural state.

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Cameron Diaz -

Before marrying Benji Madden in 2015, Diaz told InStyle magazine that she didn't know if anyone really was naturally monogamous.

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Whoopi Goldberg -

EGOT winner Goldberg wrote in her 2015 book, 'If Somebody Says 'You Complete Me,' Run!,' that extramarital affairs aren't necessarily bad. She believes that it's better to go after what you're looking for than living constantly frustrated in a relationship.

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Jada Pinkett Smith and Will Smith -

Married since 1997, the acting power couple have been outspoken about their exploration of an open marriage. In October 2023, they revealed that they have in fact been separated romantically for several years, but are staying married and maintaining a partnership that goes beyond a traditional relationship. 

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Willow Smith -

The star couple's daughter, Willow Smith, came out as polyamorous in an episode of 'Red Table Talk.' She discussed with her mother and grandmother how she finds monogamy "antiquated."

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Nico Tortorella -

The 'Younger' actor told Cosmopolitan in a 2016 interview that they were in a queer polygamous relationship with spouse Bethany C. Meyers. Tortorella's pronouns are they/them.

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Maria Bello -

In a 2006 interview with Esquire, actress Maria Bello stated that "monogamy is a big fat lie." She also mentioned that the whole idea of monogamy is nonsensical. 

Sources: (Cosmopolitan) (Women's Health) (E!) (Rolling Stone) (Esquire) (Das Neue) (Playboy) (People) (The New York Times) (Entertainment Tonight) (InStyle) (Men's Journal)

See also: The growing trend: Why couples opt to live separately

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