The singer's raunchy tune is about Paula

Robin Thicke has revealed that the lyrics for his saucy song Blurred Lines are about his wife Paula Patton.

The singer, 36, admits that actress Paula, 37, has got a lot raunchier since they started dating in their teen years and his No 1 hit reflects that.

Blurred Lines has that she’s a good girl, but she wants to be a bad girl. It’s very much about my wife,’ Robin tells US radio DJ Howard Stern in an interview.

‘My wife is Mrs Good Girl, but gradually over our marriage, I’ve turned her into a bad girl.’

Robin‘s risqué track is accompanied by a controversial unrated video which sees models Emily Ratajkowski, Jessi M’Bengue and Elle Evans dance around topless.

He says Paula is just as cheeky as the scantily-clad girls in the clip.

‘Do you spank her? Have you tied her up?Howard Stern asks Robin, who confesses: ‘She’s naughty sexually… I won’t get into too many details. We’ve done just about everything… and she likes it all.’

But the musician won’t reveal whether he’s ever brought another girl into the bedroom.

‘Out of respect for her,’ he tells Howard, ‘we just won’t answer that one.’

Watch the video for Robin Thicke‘s hit single Blurred Lines

SEE PICTURES Robin Thicke and Paula Patton at the Chanel SoHo reopening party in New York

SEE PICTURES Robin Thicke‘s Blurred Lines video model Emily Ratajkowski‘s sexiest Instagram photos

Anna Duff