The 28-year-old posted a screenshot of an alleged direct message he received from Disick late on Monday, August 30, on his Instagram Story.
The self-proclaimed Lord Disick appeared to have sent the model a photo of Kardashian and Barker laying down and kissing while on a European vacation. "Yo is this chick ok|!???? Broooo like what is this. In the middle of Italy," Disick reportedly wrote.
Bendjima made it clear he doesn't consider the 38-year-old a friend, writing back, "Doesn't matter to me as long as she's happy. PS: i ain't your bro."
"keep the same energy you had about me publicly, privately," Bendjima captioned the screenshot. "couldn't miss this one. He been playing around for too long, tired [sic] to stay quiet and be the nice guy. back to work now," he wrote on another Story.
Neither Disick, Kardashian or Barker appear to have responded to Bendjima's dig.
Bendjima reportedly dated the Keeping Up With The Kardashians alum on and off for over a year. Kardashian and Disick share children Mason, 11, Penelope, 8, and Reign, 6, but called it quits for good in 2015.
Since being linked earlier this year, the reality star and the Blink-182 drummer haven't been able to keep their hands off each other. In April, Barker and Kardashian shared an extra streamy kiss where she straddled the 45-year-old while wearing a bikini.
Bendjima reportedly shared how he felt about the love birds. "Shamelessness has become so normal in today's society that modesty has become strange," he wrote on an Instagram Story at the time, per Radar.
Meanwhile, Disick has been tied to Amelia Hamlin since October.
According to an OK! insider, the 20-year-old's parents have concerns about the relationship. "Harry [Hamlin] and Lisa [Rinna] have been sitting back and hoping that Amelia would come to her senses. But it's clear she's in way too deep now, and that they need to make their feelings known," the source said. "The worry is that Amelia will be pregnant before she knows it, so Harry and Lisa are ready to take the bull by the horns before Scott ruins their daughter's life!"