This Bikini Babe Used to Date Rob Kardashian, But Who Is She? (PHOTOS) 2 of 2 Prev Autoplay View Gallery Tweet January 1, 2013 at 08:00AM EST by Chako Suzuki Related: The Kardashians, Relationships , Rob Kardashian Jr. , Guess Who? , Celebrity Beauty full size Credit: Rita Ora on Twitter It's Rob Kardashian's Ex-Girlfriend Rita Ora! It's 22-year-old Brit singing sensation Rita Ora, who dated Rob in the last half of 2012 (rumors started in the spring). Their public breakup in early December 2012 was pretty messy and included cheating and pregnancy rumors.