Kendall Jenner has long been the subject of Justin Bieber dating rumors, but are they true? According to the model, the answer is no. When asked about the Bieber romance buzz during an appearance on 'Nightline,' Kendall explained, 'He's a longtime friend of our family. Everybody loves to assume things, but no.' Kendall's career on the catwalk has been skyrocketing of late, working with Marc Jacobs and other famous names.