Photo: Chris Weeks/Getty Images; Dimitrios Kambouris/Getty Images; Francois Durand/Getty Images

On Monday, Kardashian’s ex-boyfriendYounes Bendjimaposteda screenshot of an alleged Instagram direct messagehe claimed to have received from Disick, 38, in which the Talentless creator appeared to make a dig at Kardashian.
A source tells PEOPLE Kardashian, 42, believes Disick did send the DM to the Algerian model.
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The insider adds that Kardashian and Disick’s kids — sonsMason, 11, andReign, 6, and daughterPenelope, 9 — “love” Barker, 45, “which has been hard for [Disick].”
Kourtney Kardashian and Travis Barker.Jeff Bottari/Zuffa LLC/Getty

“Yet, he and Kourtney have been getting along,” the source continues. “Kourtney is disappointed that he engages in drama when they have been doing well co-parenting. She doesn’t get why he felt the need to reach out to Younes. She will confront him about it. For now, she continues toenjoy her trip with Travis.”
In the message to Bendjima, Disick allegedly sent a photo of Kardashian straddling Barker and wrote, “Yo is this chick ok!???? Broooo like what is this. In the middle of Italy.”
Bendjima, 28, allegedly responded: “Doesn’t matter to me as long as she’s happy. P.S. I ain’t your bro.”
He then shaded Disick further in a note he added to the screenshot. “Keep the same energy you had about me publicly, privately,” he wrote. “Couldn’t miss this one. He [had] been playing around for too long, [I’m too] tired to stay quiet and be the nice guy.”
Younes Bendjima Instagram

Kardashian previously dated Bendjima for over a year before theybroke upin August 2018. Theybriefly reconciledin 2019 before eventually calling it quits again.
Disick, who is currently datingAmelia Gray Hamlin, split from theKeeping Up with the Kardashiansstar in 2015 after dating on and off for nine years.
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PEOPLE confirmedKardashian and Barker’s relationship in January. A source later said that Disickwas “struggling"with his ex’s blossoming romance with the Blink-182 drummer.
“Before Travis, Kourtney’s relationships were never serious. It was more like flings. With Travis, it’s different,” the source said in April. “Scott was pretty shocked when he found out that they are dating, and he can tell that they have moved very quickly. His kids love Travis, which is also hard for Scott.”
During theKUWTKreunionin June, Kardashian and Disick wished each other well when addressing their respective relationships.
“I think if you really love somebody, you want them to be happy no matter what. So I do give her a blessing to be happy,” Disick said, to which Kardashian added, “Whoever would make him happy, I would give my blessing.”
source: people.com