Despite the fact that Julian was frequently posting sweet pics of the two, Kendall had been pretty quiet about it and their relationship was kept under wraps.
Now, according to Star magazine, Kendall was worried that her boyfriend was cheating on her and "couldn't live with the doubt," so she dumped him.
Julian has been Instagramming a lot of pictures of girls that weren't Kendall lately, but they were wearing his "Brooks" beanies and they looked more like promotional photos than personal ones.
Still, Kendall lives in Southern California and Julian plays football for the University of Nevada, so when you have those thoughts in your mind, it would definitely make a long distance relationship that much more difficult.
Kendall isn't the only one in the fam struggling with relationship problems. With sister Khloe Kardashian's four-year wedding anniversary coming up on September 27, she is reportedly on the outs with husband Lamar Odom.
Maybe they can lean on each other for support!