Liz Taylor Slept With Reagan, JFK Book alleges threesome with JFK, 'Unsolved Mysteries' guy By Evann Gastaldo, Newser Staff Posted Oct 11, 2012 10:51 AM CDT 31 comments Comments In this 1959 file photo, actress Elizabeth Taylor is seen with singer Eddie Fisher before their marriage. (AP Photo/File) (Newser) – A new—and, of course, unauthorized—biography of Elizabeth Taylor unloads an absolute treasure trove of delightfully scandalous revelations. Chief among them: Liz allegedly slept with Ronald Reagan when she was a teen and he was 36, according to Elizabeth Taylor: There Is Nothing Like a Dame by Danforth Prince and Darwin Porter. "Reagan was treating me like a grown woman, and that thrilled me," she reportedly told a friend. "We sat on his sofa and I could tell he wanted to get it on but he seemed reluctant to make the first move. I became the aggressor. After a heavy make-out session on the sofa, we went into the bedroom." And this one may be even better: The book alleges she also slept with John F. Kennedy, but that dalliance was reportedly a threesome in Kennedy's pool … with actor Robert Stack, otherwise known as That Guy Who Hosted Unsolved Mysteries. The book also claims Taylor had an affair with Frank Sinatra, but she got too serious and pretended to be pregnant with his baby in an attempt to get him to marry her, the Daily Express reports.