Simon Cowell ''remains friends'' with his unauthorised biographer Tom Bower.

The 52-year-old music mogul granted the journalist hundreds of hours of access during Tom's research for the tell-all book - which sensationally claims Simon had a fling with Dannii Minogue and wanted to sleep with Cheryl Cole.

But despite the subsequent fall-out, Tom says he has enough dirt on the 'X Factor' boss for a follow-up, and insists there is no bad blood between them.

Recalling his conversation with Simon after the book's release, he said: ''The first call was, 'You are getting a lot of publicity for your book'. He said, 'It's a bit embarrassing, you got things I didn't know you'd got'. But we get on very well. Finally he said to me last night, 'We remain friends'.

''There will be a sequel. He'll be with us for a long time I think.''

However, the writer insists that despite Simon's co-operation, he still had to work hard to find out the truth about his many women.

Appearing on UK show 'This Morning', Tom said: ''He didn't hand it out to me. He made me go and do what journalists do, which is dig.

''Then I confronted him with some things - and other things I wouldn't tell him about.''

But having formed a close bond with the star, Tom says there were a few things he decided against including out of respect.

He added: ''There are a couple of things. I got so close to him there were times he would say things, do things ... we were so close I was privileged to see things. I thought that was so private, I wouldn't abuse my facility. That was something I really shouldn't put in the book.''

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