Madonna thinks 'Fifty Shades of Grey' was written for virgins.

The 'Living for Love' hitmaker, whose 2001 documentary, 'There's Only One Madonna,' was produced by James, said: "It's pulp fiction. It's not very sexy, maybe for someone who has never had sex before. I kept waiting for something exciting and crazy to happen in that red room thing, and I was like, 'Hmm, a lot of spanking.' I also thought, 'This is so unrealistic because no guy goes down on a girl that much.' I'm sorry, but no one eats p***y as much as the guy in that book."

Asked whether her views on sex have changed in recent years, Madonna told Billboard magazine: "Absolutely not. Nope. Sex is a wonderful, necessary part of life."

But the singer, who was previously wed to actor Sean Penn for four years until 1989 and Guy Ritchie from 2002 to 2008, would like to find love again.

The star, who has four children, Lourdes, 18, Rocco, 14, David and Mercy, both nine, said: "I'm a hopeless romantic. I love being in love. I mean, I'm in love with my children, but that's a different kind of love. It's the love that never ends."