The news that Justin Timberlake is to star in a romantic comedy with his ex is bound to have annoyed girlfriend Jessica Biel.But luckily the singer, 29, decided to whisk her off for a ski break in Verbier, Switzerland for her 28th birthday in the days before he started filming.

The couple, who are rarely pictured out together, looked happy together as they went sledging in the Swiss Alps last week.Justin's ex, actress Cameron Diaz, has said she was 'thrilled' that he had been cast as her love interest in new movie Bad Teacher.

The 37-year-old Charlie's Angels star plays a junior high school teacher who sets out to steal a colleague's boyfriend, played by Timberlake.She dated the pop singer for almost four years until they split in 2007.At the Oscars, she told reporters: 'We're thrilled to have him. He's the best person for the job. He's going to be hilarious.

'He's clearly a very talented comedian, look at his Saturday Night Live [skits]. He's fantastic. He's going to be so great.'But it seems Jessica has nothing to worry about just yet, as Justin's mother thinks she could be The One.
Describing the Valentine's Day actress as 'amazing' and 'one of us', Lynn Timberlake added: 'She's so down-to-earth and her family is great.

'She said the couple's relationship worked because 'they're both very funny and creative'.And she said 'I've thought that before' when asked if Jessica was The One.Jessica, meanwhile, described their relationship to Vogue magazine as 'the most precious thing that I have in my life,' adding, 'I care about it so much that I don't care about what anyone says or thinks.'