Article continues below advertisementCharlie Sheen and ex-wife Denise Richards divorced back 2006, however, the actor still has a lot to say about it.The Two and a Half Men star, 60, appeared to shade the Real Housewives of Beverly Hills personality, 54, during a stop for his book tour in Atlantic City, N.J.During the event for his memoir, The Book of Sheen, he was asked by a fan about his past marriages, according to Daily Mail.Article continues below advertisementCharlie Sheen's Marriages Source: MEGACharlie Sheen said his divorces were 'messy.