Sienna Miller, Oli Green engaged after 4 years

Sienna Miller and Oli Green are taking the next step in their relationship.

The 44-year-old "Jack Ryan: Ghost War" actress and "Bridget Jones: Mad About the Boy" actor, 29, are engaged, E! News reported Tuesday, June 9. The news comes days after Miller was spotted wearing a diamond on her ring finger while on a stroll in Spain.

USA TODAY has reached out to Miller and Green's representatives for comment.

The couple, who started dating in 2022, share two young children; Miller confirmed to E! in May that she'd given birth to their second child earlier this year.

Miller publicly revealed her baby bumps at high-profile events for her two children with Green, in 2023 at the Vogue World event and again in 2025 at the Fashion Awards in London. Miller also shares 13 year-old daughter Marlowe Sturridge with ex Tom Sturridge.

"I would have said the teenage girl would be harder to juggle until the transatlantic flight I took yesterday with the toddler and the newborn," Miller told Jimmy Fallon during a May 14 appearance on "The Tonight Show." "The toddler now wins hands down. It was an absolute disaster. There's no negotiating.”

Sienna Miller and Oli Green's relationship timeline

Miller has previously discussed her unexpected relationship with Green, whom she met at a Hollywood party in 2021.

"I didn't expect to take it seriously and then quite quickly, I fell in love. I wasn't like, 'I'm gonna get a younger boyfriend.' It was more ... 'Why are you young? That’s so annoying,'" she told Harpers Bazaar UK in 2024.

She added, "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. I see it in his female friends as well as in the men."

Though the two shared a kiss that Halloween, Miller told Vogue in 2023 that she was not eager to pursue a relationship with Green.

"I was like, this is absurd. This will not go anywhere," she said. "And then he worked hard to persuade me to go out for a drink with him"