Today marks the 51st anniversary of Marilyn Monroe's death. CBS "This Morning" celebrated the anniversary by featuring the forthcoming book, “These Few Precious Days: The Final Year of Jack with Jackie,” by author Christopher Andersen. The book claims that Monroe herself called Jackie Kennedy to tell her that she was having an affair with her husband. Monroe, Andersen claims, thought she would be the new first lady. Andersen also claims that Jackie was able to deal with her husband's affairs because her own father who she adored was a serial adulterer which made it easier to reconcile love and infidelity. That said, CBS co-anchors Charlie Rose and Norah O'Donnell had nothing but praise for the President and First Lady.