Jennifer Aniston 'mystery man'.

Tongues have been wagging in Hollywood for the past week - because our favourite celebrity singleton, Jennifer Aniston, has been spotted with yet another 'mystery man'.

Jen was seen driving away from best friend Courteney Cox Arquette's house with Mr Mystery in the passenger seat. But now he's no longer so mysterious because he's been identified as Brian Bourma, a key grip on the actress's latest movie.

'They met on the set of Travelling in Vancouver, where he was in charge of moving lights and other heavy equipment,' says an insider. 'He's actually quite a ladies' man. He's dated actresses before.'

Yes, but is he dating this actress - or was kind-hearted Jennifer just giving him a lift? Watch this space!