15 Dec 2015 Kourtney Kardashian and Justin Bieber have allegedly been hooking up and Kendall Jenner apparently thinks it's creepy. He used to date her best friend Hailey [Baldwin]. Plus, he's just They text each other all the time.".
17 Dec 2015 Confused about Kourtney Kardashian's relationship with Justin Bieber? states that Kendall is upset because Justin — who used to date her his friends about "hooking up with Kourtney" and they text each other all the time.