The couple, who share daughter Marlowe, began dating in 2011

By Lindsay Kimble
Updated July 16, 2015 01:20 PM
Advertisement
David M. Benett/Getty

Sienna Miller and longtime boyfriend Tom Sturridge have called it quits after four years together, though it may not be a definitive end, a source tells PEOPLE.

“They are over, but don’t rule out a reunion,” says the source, who knows the couple’s circle.

“Tom wanted to get married and have more children. Sienna didn’t,” the source adds. “This year everything exploded with Tom in London and Sienna leading a separate life in the U.S. and [her appearance at] Cannes,” where the actress was busy in May with the high-profile role as a Cannes Film Festival jury member.

The Sea of Trees actress has been spotted not wearing her ring recently and attended this year’s festival in France alone.

The couple, who began dating in 2011, share a 3-year-old daughter, Marlowe Ottoline. They were reportedly engaged in 2012, although neither of the Brits ever confirmed.

The American Sniper actress, 33, and Sturridge vacationed together in Ibiza just two weeks ago. Joined by their daughter, the family was spotted strolling on a beach in the Spanish getaway.

“[He’s] grounded, intelligent, kind and [an] intact person,” Miller said of the Tony-nominated actor, 29, in December. “That’s amazing to be around. That’s the father of my child. There’s no drama.”

Its Not You Its Me: The Most Iconic On-Screen Breakups

Miller previously dated Jude Law on-and-off from 2004-2006, getting engaged before ultimately parting, and again from 2009-2011 before splitting for good.