The famously on-again, off-again celebrity couple Kendall Jenner and Devin Booker have broken up once more. Here's a relationship timeline.

A source exclusively told Us Weekly that Kendall Jenner and Devin Booker have split again after years of an on-and-off ...

Kendall Jenner and Devin Booker relationship timeline. For the last five years, Jenner and Booker have been on again and off again, dating other people in between and now are back on for a third time.