Apparently, it all went down after his performance at Travis Scott's performance at Poppy nightclub, where a pop-up event was being held in celebration of Kylie's makeup collaboration with her older sister Kourtney Kardashian.
The Coachella source said the duo weren't going out of their way to hide their affections, explaining the pair 'were sitting on each other's laps and all over each other all night long'.
The source added, "They spent the whole night together and left together".
There's nothing worse than bumping into your ex after finding out that they're dating someone new - as Bella Hadid found out a year ago, bumping into her former lover, The Weeknd (or Abel Tesfaye) who was dating girlfriend, Selena Gomez, at the time, on the Victoria's Secret catwalk.
Fans have been wondering whether or not The Weeknd's new song Wasted Times is about him missing the model. Onlookers watched as the two wandered through the VIP area, and at one point the pair were seen hugging, with Jeffries resting her head on his shoulder. Let's just hope he doesn't break any more hearts in the process of healing his own this time.