Kourtney Kardashian on Scott Disick"s New Girlfriend: Eh, Whatever

Kourtney Kardashian reportedly has one very simple and very clear reaction to Scott Disick allegedly having a new girlfriend.

And this is it: I DON"T CARE.

As reported previously by The Hollywood Gossip, Disick was spotted out and above in New York City last week with 18-year old model Lindsay Vrckovnik.

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Neither Disick nor Vrckovnik has commented on the alleged romance, but sources close to both parties confirm some kind of romance is brewing.

Is it bothering Kourtney, who dumped Disick in July after putting up with his drunken, self-centered antics for far too many years?

"Kourtney surprisingly isn"t fazed by this at all," an insider tells Entertainment Tonight. "She"s moving on. She knows it"s just a fling."

Even if it"s somehow more than that, however, Kardashian isn"t likely to lose much sleep over the relationship.

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

But a different source does tell ET that Disick remains a loyal dad to his three children.

"Scott sees the kids whenever he wants to.

"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."