Absence may make the heart grow fonder for some, but for Jon and Kate Gosselin, it has only made their former feelings of love — and any semblance of civility that went along with them —  evaporate entirely.

Jon, who has now gone through nearly every stage of the reality star life cycle, from celebrity to IT guy to waiter and back to the small screen again, is now completing his metamorphosis into the master of tabloid fodder he was always meant to be with a new book about — you guessed it — his ex-wife.

According to In Touch, Couples Therapy star Jon is planning to pen a tell-all about the ins and outs of his 10-year marriage to Kate, and based on his own admissions about the forthcoming book, nothing is off-limits.

“It’s about my feelings and my marriage,” says Jon, adding, “Kate will flip.”

While Jon’s book may reveal new details of what exactly went down behind closed doors at the Gosselin house, it’s likely nothing reality TV fans haven’t heard some version of before.

Jon has been vocal about his less-than-pleasant memories of his ex on Couples Therapy, calling Kate a “piece of f—king s—t” and suggesting that she “go and f—king die.”

However, despite the free preview of his material, Jon says, “I think people want to hear my story.”

Source: In Touch