Hugh Hefner has accused his estranged wife of cheating on him before they were separated as he files for divorce 11 years after the pair split.
The Playboy boss decided to end his union with Kimberly Conrad once and for all over a dispute about his decision to sell the house next to his famous Holmby Hills mansion, where his sons and ex once lived.
And now it seems the once harmonious split is about to get messy.
After officially filing for divorce last week (ends04Sep09), Hefner now claims his soon-to-be ex-wife cheated on him.
He's not naming names, but Hef tells TMZ.com that while he was faithful during his marriage, Conrad cheated on him "early in the relationship". The publisher reveals he knows who the other man is.
Despite the alleged affair, Hefner and Conrad stayed married and when they eventually split in 1998, the Playboy boss agreed not to seek a divorce for the sake of the couple's young kids.
He also agreed to honour the couple's pre-nuptial and post-nuptial agreements, adding, "I have been generous to a fault."
But when Conrad sued him over his plans to sell the property next door, he decided enough was enough.
Meanwhile, the divorce proceedings indicate reports suggesting Hefner is running out of money are way off the mark - the ageing lothario is worth more than $40 million (£27 million).
Earlier this year (09) it was reported British tycoon Sir Richard Branson was considering launching a bid for Playboy, amid rumours the adult media empire was losing money and Hefner was keen to cash in and retire.
The report proved untrue, and financial records in the divorce papers show he has vast assets and an monthly income of $290,580 (£193,720).
Hefner pays himself a salary of $116,667 (£77,778) per month from Playboy alone, and he has additional income through property investments and share dividends.
The 83 year old is asking a judge to approve spousal support payments of $20,000 (£13,000) a month, claiming he has paid his ex almost $12 million (£9 million) since they split in 1998.