Katie Price has claimed that she once found Danny Cipriani in bed with another woman.
The former glamour model dated rugby player Cipriani in 2011, before he reconciled with ex-girlfriend Kelly Brook.
Price's latest book, Love, Lipstick and Lies, relates an alleged incident where she arrived unannounced at Cipriani's house and found him with someone else.
In an excerpt published by The Sun, Price wrote: "My gut instinct had been spot on, Danny, who was supposed to be my boyfriend, was having sex with another woman.
"'Hiya,' I said - sounding calm even though I felt anything but."
She continued: "I marched up to him and flicked his **** with my hand. I said: 'All right, are you?... He rushed out of the room."
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Despite the confrontation, Price said that she was prepared to continue the relationship.
She apparently told Cipriani: "Danny, I want you to know that I forgive you, but I never forget.'"
The relationship later ended when Cipriani returned to Australia to join his rugby squad.
Price said that she was "under [Cipriani's] spell" when dating him, despite the 25-year-old refusing to be seen in public with her.
Following his relationship with Price, Cipriani reunited with former girlfriend Kelly Brook. The TV presenter and Price later engaged in a public spat.
Brook subsequently split from Cipriani amid rumours he had been unfaithful. Since her relationship with him, Price has married Kieran Hayler and given birth to her fourth child, Jett Riviera.
