Charlie Sheen thinks Denise Richards` book `rocks`

Washington: Charlie Sheen has a message for his ex-wife, Denise Richards: your book is winning!

Denise -- whose marriage to the former "Two and a Half Men" star ended in 2006 --recently penned a memoir, "The Real Girl Next Door," and though the pair have suffered less-than-amicable trials in the past, Charlie says he`s not only read the book, he actually enjoyed it.

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"Your book rocks!!" Charlie Tweeted Denise on Friday, along with the hashtags "HotMomma" and "KeepItInTheFamily."

"Never thought I`d say it... but loved it D..! xo c," the actor, 45, added.

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In yet another surprise move, Charlie did his ex a second solid by Tweeting a link to her book on - seemingly to urge his more than 4.5 million followers to purchase Denise`s new bio.

Perhaps Charlie`s friendly notion is in response to Denise`s polite literary handling of their divorce - the cause of which she opted not to reveal inside the pages of her new book.

"It was really important for me to keep the details of the downfall of our marriage between us, and I really wanted to focus on the feelings because that`s what I thought the women and men reading this could relate to," Denise, 40, who has two daughters with her now ex-husband - Sam, 7, and Lola, 6, told Access Hollywood`s Maria Menounos on Tuesday.

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"I also didn`t want to be disrespectful to [Charlie] and what our marriage was," she continued. "I also included a lot of good times and good memories."

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