Blue have announced plans to publish a tell-all biography.
Duncan James, Lee Ryan, Antony Costa and Simon Webbe tease that they will detail their exploits throughout the group's run in the book.
Duncan told The Sun: "There's going to be so much good stuff in there. We've all s****ed so many women - uncountable amounts.
"We've done everything possible. Nothing could possibly shock us now. It's going to be so kinky. The stories will just be unbelievable."
The 35-year-old, who came out as bisexual in 2009, claimed that the book would include some anecdotes from Antony too.
"Antony was just as bad, if not worse than me or Lee. He's settled now, but people will be shocked at the things we reveal," Duncan added.
News of the book comes as the boyband, who had a break in 2005 before reforming in 2011, unveiled a video for their new single Broken.
Lee recently hit the headlines when he got involved in a love triangle with Jasmine Waltz and Casey Batchelor in Celebrity Big Brother.