Sex forges unlikely alliances and Hugh Hefner, who has been the world’s most prominent personification of the unchained heterosexual male libido since his 1953 launch of Playboy magazine, forges unlikelier alliances than most. It’s not only that the 85-year-old is looking forward to marriage later this month to Crystal Harris, a psychology major-turned-Playboy Playmate and aspiring pop singer 60 years his junior.