Emma Stone and Andrew Garfield were earlier this month reported to have taken a break from their three-year relationship but insiders say the actress has called time on their romance for good.

"(Emma) ended things and moved back to LA. It's finished. It's not just a break," a source told usmagazine.com.

One reason for the couple's split is said to be the 31-year-old actor's dedication to his role as a 17th century Jesuit in "Silence", for which he has lost 40 lbs (around 18 kg) and began shooting in Taiwan in January.

Another source said: "He'd been in a dark place for months, getting into his role. He wasn't being the best partner."

While the 26-year-old actress is said to be understanding about Garfield's "work anxieties", it was previously revealed that the pair's dedication to their respective careers was partly responsible for the problems in their relationship.

A source said previously: "Emma understands his work anxieties, it's why she originally pulled out of 'Cabaret' last year and only did it this year, but they're taking a break from seeing each other.

"They're both slave to their schedules. This time last year they were privately discussing marriage."