The reality star and model started dating in 2016, but "recently broke up after [they] decided it wasn't workout out."
The momager explains what went down during the family's Christmas card photo shoot.
News broke of Kourtney and Younes' split on Tuesday -- and Kim and Khloe were quick to have their sister's back.
The 25-year-old fired back at reports about the couple's breakup, saying he was being portrayed as the "bad guy."
A source tells ET the reality star initiated the split, after the two weren't getting along towards the end of their relationship.
A source tells ET the reality star was the one who initiated the breakup.
Here's everything you've missed since Friday!
Things got real on a whole new level during the season 15 premiere of 'Keeping Up With the Kardashians.'
The sisters got into it on Twitter, proving that some feuds are hard to get over.
The 'Keeping Up With the Kardashians' star took the pitcher's mound with Kevin Hart in Los Angeles.
The reality star was all smiles at the game amid intense feuding with her family on 'KUWTK.'
The reality star opens up about why she wasn't into being a Kardashian anymore.
Kim is calling out fans on Twitter following her explosive fight with her sister.
Kourtney also opened up about the possibility of having more kids ahead of the season 15 premiere of 'Keeping Up With the Kardashians' on Sunday at 9 p.m. on E!