‘They’re just not right for each other,' a friend of Paul's tells Now. 'Paul realized that he didn’t want to settle down with Cameron.

'He’d prefer to be single. He loves the limelight and dating all these beautiful Hollywood ladies. It raises his profile.’Cameron, 36, is currently in California while Paul is working in London. But friends say the romance has little chance of carrying on when he goes back to LA.

‘Cameron deserves someone who wants the same as her: marriage and children,’ our source says. ‘Paul can’t give her that.'