Insiders tell Now that the busty stylist was always planning to spill the beans about their sex romps, even keeping meticulous notes about Peter's sexual prowess.
'Every second I was with him, I thought I'd died and gone to heaven,' she says.
Maddy, 30, hit the headlines after she told how Peter chatted her up at the birthday party of a mutual friend's child, just eight days after his divorce from Jordan in September.
Now trying to scheme her way into the A-list social scene after she was spotted at a London film premiere last week, Maddy hasn't held back about the pair's sexy encounters, including an intimate shower romp during a photo shoot in London.
'His brother Mike handed me a towel and told me to take it to Peter,' she revealed. 'I knocked on the door and as the door opened, Pete pulled me inside. He was totally naked and dripping wet.'
Red-faced Peter, 37, has been left embarrassed by the revelations, especially after it was reported in February that he hadn't had sex in eight months.
He's now trying to downplay the fling and is said to be considering legal action against Maddy.
And despite his vow to steer clear of 'fake' women after his split from Jordan, Maddy, with her peroxide-blonde hair and breast implants, doesn't quite fit the image of the kind of woman he wants to date.
'I want someone who's happy to sit in and watch movies, go out for dinners, have family holidays - a girl for whom family is enough,' he said last year.
'I don't care what job she has, I just want someone who's satisfied with the love I have to give and the family that comes with me.'
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