Natalee Holloway killer Joran van der Sloot is having sex with three different women, despite serving a 28-year sentence in a Peruvian prison for murder. ... The news comes as no surprise to people who know the 36-year-old van der Sloot, who last year finally confessed to the brutal 2005 murder of 18-year-old high school senior Natalee Holloway in Aruba. “He’s a player, and has always been a player,” his childhood friend, Cas Arends, told the Post. “Women have always been attracted to him for some reason.” ... After escaping authorities investigating Holloway’s death in the Netherlands territory and the...