WWW- Robbie Williams has admitted to sleeping with countless call girls.

The singer, who says he prowled strip joints for sex, even begged a porn star for on-screen sex while filming a recent pop video.

The heartthrob, who is dating ‘Nip/Tuck’ actress Valerie Cruz, also admits, in his latest book, ‘Feel’, to sleeping with young groupies. He says of lap dancers: “The t*tty monster gets on my shoulder. I need to take her home and f*** her. Then I do. And then I feel genuinely sorry for her predicament.”

The sexy star, who has dated a string of celebrities including Nicole Kidman, Geri Halliwell and Rachel Hunter, says he couldn’t control himself on set of his ‘Come Undone’ video where he is seen in bed with two porn stars.