Young artists Justin Bieber and Selena Gomez have decided to go their separate ways because of their "crazy" work schedules, the showbiz portal E! Online said.

The couple split a week ago, a source told the online magazine.

"Because of their crazy schedules, it was getting harder and harder to maintain a relationship," the source said.

Rumors about the breakup started flying over the past two weeks, especially after Bieber was spotted in public with Victoria's Secret model Barbara Palvin, 19, who went with him to see "The Lion King" on Broadway.

The 20-year-old Gomez and Bieber, 18, went public with their romance in February 2011, when they attended the Vanity Fair party together after the Oscars ceremony.

"I'm doing great with him but I feel sort of embarassed talking about it," Gomez told Efe about her relationship with Bieber in late September. EFE