(Cover) - EN Showbiz - Justin Timberlake and Jessica Biel reportedly decided to end their relationship after arguing while they were on holiday.

The pair first began dating in 2007, but faced constant speculation their romance was on the rocks. They finally confirmed they are no longer together in a statement last week and it has now been claimed Jessica initiated the split while they were at a ski resort in Colorado. The stars had decided to take a break from their hectic schedules and planned a romantic winter break to celebrate the actress 29th birthday earlier this month.

However, the trip is believed to have turned sour when they began to fight.

"Jessica has been telling friends they had an argument. She told Justin, 'I'm tired of this,' broke it off and flew home to LA alone on March 7," a source told New York Post.

Representatives for the pair have declined to comment on the rumours.

Jessica appears to be coping well with the split. The Hollywood beauty was seen partying with friends in Los Angeles on Friday night and then hosted an intimate dinner to celebrate her brothers birthday at a Hollywood hotspot on Saturday evening.

Sources close to the pair insist the decision to break up was mutual and they had both decided it was time to move on. (C) Cover Media