It was only a matter of time before the truth came out as to why Kendall and Selena called off their friendship. A new report claims is all has to do with Justin Bieber. Okay, that’s not new news, but the details of went down are! Things are far from peachy between Selena Gomez , 22, and her ex-bestie Kendall Jenner , 19, and you can thank Justin Bieber , 21, for that! A new report has surfaced that claims Selena was betrayed hard by the Jenner sibling, and things got real nasty — real quick. Hollywood is like high school, but worse. The once best friends, Selena and Kendall, are no more, and it reportedly all has to do with a steamy hook up between the model and Justin. The “Come & Get It” singer reportedly walked in on Biebs fooling around in bed with Kendall, according to Life & Style . Oh, boy… not good! “For months, Selena sent her angry texts and insulted her,” an insider told Life & Style . “She was really mean to Kendall, but who could blame her?