Robert F. Kennedy Jr. has allegedly compared his current wife, Cheryl Hines, to his second wife, Mary Richardson Kennedy. In RFK Jr.: The Fall and Rise, author and investigative journalist Isabel Vincent claims Kennedy, 72, "seems to have drifted away from" Hines, 60, and "no longer desires to spend much time with her." "Kennedy spends a lot of time in private conversations comparing Hines unfavorably to Mary," alleged the book, which was released on Tuesday, April 14. (Publisher William Morrow wrote that Vincent had "exclusive access to RFK Jr.