Kourtney Kardashian is really moving on this time and apparently doesn't care about Scott Disick's new girl.

Entertainment Tonight reports a source close to the 36-year-old KUWTK star dished that she isn't bothered about her 32-year-old ex-boyfriend hooking up with 18-year-old model Lindsay Vrckovnik.

Disick was spotted going out with Vrckovnik since last Thursday, from a PDA-packed night in New York to a steamy chill by the beach in Miami, Florida.

"Kourtney surprisingly isn't fazed by this at all," the source revealed. "She's moving on. She knows it's just a fling."

Kardashian called it quits with the father of her three kids, 5-year-old Mason, 4-year-old Penelope and 9-month-old Reign after he was snapped getting cozy with his ex-girlfriend Chloe Bartoli during the Fourth of July weekend.

"She's trying hard to ignore it and just focus on the kids," the source added. "She knows they'll never get back together."

Looks like the Dash owner finally accepted her 9-year on-again-off-again relationship with Disick coming to an end and he is clearly enjoying the independence.

He even posted a bathroom picture with Vrckovnik where both were draped in matching fur coats and sun glasses. Disick deleted the photo soon after, though.

Meanwhile, despite the heartbreak and humiliation, Kardashian still opens the doors for Disick to visit their kids.

"Scott sees the kids whenever he wants to," another source close to the former couple previously told ET. "Despite all of Scott's addiction problems, he is a great dad and loves those kids with all his heart, and they are obsessed with him. He comes to her house to see them."

This doesn't mean, however, that she is opening her heart for him too.

"Kourtney is not taking Scott back -- never, as of right now," the source added. "Kourtney has been through a lot of drama with Scott over the years but it's for real this time."