Article continues below advertisementAt the brink of the release of Charlie Sheen's memoir, The Book of Sheen, due to hit shelves on September 9, he revealed in a new interview how, after three failed marriages, he's ready to love again."I am open to love again. If somebody walked through the door and it was the right time and you can't deny it... absolutely," Sheen told an outlet. "Probably not marriage, though."He continued, "I put this at the end of my book, but 'no' is my new favorite word and I put as much value in that as I do in 'love' as I get older.