The Keeping Up with the Kardashians star was snapped poolside earlier this week with Bartoli, a stylist.
Disick, 32, was spotted rubbing Bartoli’s back, cozying up next to her on pool lounges and even appeared to hold hands with the 25-year-old at one point.
The pair reportedly dated not long before Disick and Kardashian, 36, got serious.
Representatives for both Kardashian and Disick didn’t respond to PEOPLE when asked for comment.
The couple’s relationship has been strained over the past year after several hiccups, including a stint in rehab for Disick. The star’s issues with substance abuse have been in the forefront of the famous family’s E! reality show, particularly during Kardashian’s third pregnancy.
Shortly after Reign’s birth, Disick disappeared on a bender in Aspen, Colorado, causing Kardashian to ban him from their family home.
“I definitely go in and out of happy and dark places in my life, and I wish that I could be a little more consistent, and I wish it was a little bit easier for me to be under control, but it’s not,” Disick said during a May episode of Keeping Up with the Kardashians. “It’s something I’ve always wanted to change. It’s just not as simple as people think.”
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Though she hasn’t publicly responded to the cheating allegations, Kardashian put a fierce foot forward on social media Wednesday, sharing a throwback photo of herself at a gun range with sister Khloé, 31.
In the photo, which Kardashian captioned “Don’t mess,” the sisters takes aim at targets, weapons ready to fire.
Kardashian also shared a more lighthearted photo of two of her children’s tiny feet on Thursday, writing, “Pajama party!”