AceShowbiz -

Hollywood couple Emma Stone and Andrew Garfield have reportedly taken a break from their relationship after three years of dating. A source claims it was their hectic work schedules that forced the duo to finally call it quits for the time being.

"He's thrown himself in the project to the detriment of all else," the source was quoted as telling PEOPLE about Garfield's latest film "Silence" which currently is in production in Taiwan. "But it's too early to say the relationship is over."

Speaking of Stone, who has been seen spending time in Los Angeles after wrapping up production on her new film "Aloha", the source revealed, "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." The source added, "They're both a slave to their schedules. This time last year they were privately discussing marriage."

"It's one of those situations where only Andrew and Emma quite know if they'll pick up where they left off or they've separated," the source claimed. Meanwhile, another source said the current break up is just temporary, insisting, "They are just separated for work. Andrew is overseas. They are both busy with their careers and have not seen each other."

Neither Stone nor Garfield has addressed the separation reports. They were last seen together having lunch in New York City in early January.