Sienna Miller Says She 'Fell in Love Quickly' with 'Well-Adjusted' Younger Boyfriend: It's 'That Generation'

"I wasn't like, 'I'm gonna get a younger boyfriend.' It was more, 'F--k! Why are you young? That’s so annoying,'" said Miller

<p>Sama Kai/Dave Benett/Getty</p> Oli Green and Sienna Miller in March

Sama Kai/Dave Benett/Getty

Oli Green and Sienna Miller in March

Sienna Miller is opening up about how she "fell in love quickly" with her boyfriend, Oli Green.

In an interview with Harper's Bazaar published on Tuesday, June 11, Miller, 42, said that their romance occurred after meeting at a Halloween party and was something she "didn't expect" to take "seriously."

"And then quite quickly, I fell in love. I wasn’t like, 'I’m gonna get a younger boyfriend.' It was more, 'F--k! Why are you young? That's so annoying,'" she said.

The actress credited Green, who is 27, as someone who is "well-adjusted."

<p>Dave Benett/Getty</p> Oli Green and Sienna Miller in London, England on October 12, 2023

Dave Benett/Getty

Oli Green and Sienna Miller in London, England on October 12, 2023

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"There is a difference in the way that generation of men respect women. It’s specific to him, he is very wise and well-adjusted, but I do believe it’s also that generation. They have grown up with a slightly more level playing field," said Miller. "I see it in his female friends as well as in the men."

Miller added that as she's grown older, she's learned from "people who are younger about how clear they are in their boundaries, having that self-assuredness and self-advocacy, having 'no' in the repertoire in a way that we just weren’t encouraged to have."

<p>Stephane Cardinale - Corbis/Corbis via Getty</p> Sienna Miller at 2024 Paris Fashion Week

Stephane Cardinale - Corbis/Corbis via Getty

Sienna Miller at 2024 Paris Fashion Week

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Related: Sienna Miller Is 'Proud' of How She Bounced Back After 'Chaos' Surrounding Jude Law Relationship

She echoed similar sentiments in an interview for Vogue's December cover story, expressing, "I would imagine it would be complicated for anyone to get their head around, but there’s been nothing but love and joy."

The couple, who made their red carpet debut at the Vanity Fair Oscar Party in March 2022, welcomed their first child together earlier this year. Miller is also a mom to daughter Marlowe, 11, whom she shares with ex Tom Sturridge.

<p>Lionel Hahn/Getty </p> Sienna Miller and Oli Green at the 2022 Vanity Fair Oscar Party

Lionel Hahn/Getty

Sienna Miller and Oli Green at the 2022 Vanity Fair Oscar Party

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While speaking about having a baby in her older years in her interview with Vogue, she quipped, "I'd love to get to a point where I didn't feel the need to make a joke of my being older and having a baby. To show I'm in on the joke."

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