Sienna Miller Opens Up About ‘Quickly’ Falling In Love With Boyfriend, Despite 14-Year Age Gap

The actress, 42, and Oli Green, 27, welcomed their first child together earlier this year.

Sienna Miller was more than surprised by how soon she’d fallen head over heels for her boyfriend, fellow actor Oli Green.

“I didn’t expect to take it seriously and then quite quickly, I fell in love,” the “Burnt” actor said in a Tuesday cover story for Harper’s Bazaar. “I wasn’t like, ‘I’m gonna get a younger boyfriend.’ It was more, ‘F***! Why are you young? That’s so annoying.’”

Miller, 42, and Green, 27, started dating in 2021 after meeting at a Halloween party. The couple welcomed their first child together in January. Miller also shares a daughter with ex-boyfriend Tom Sturridge.

Though she hadn’t been aiming to date someone younger on purpose, Miller praised Green as “very wise” and “well-adjusted,” which she credits to the mindset of his generation.

“There is a difference in the way that generation of men respect women. … They have grown up with a slightly more level playing field,” she said. “I see it in his female friends as well as in the men.”

Back in December, the “American Sniper” star got candid about the criticism she’s endured.

“Me being the older woman in a partnership with a younger person, or being pregnant over 40 ― and that that’s ‘irresponsible’ and ‘the poor child’ ― it’s such double standards, and I think it’s so unquestioned in people’s minds,” Miller said on Vogue’s podcast.

She added: “It’s absurd. I just find that judgment, it’s so one-sided, and it’s so sad.”

Miller said in a separate interview with Vogue that she understands the pair’s relationship “would be complicated for anyone to get their head around,” but “there’s been nothing but love and joy.”