'You're fake!' Scott Disick confronts Kourtney Kardashian about KUWTK fam drama

He's hurt she's getting him uninvited to important family events.

In a preview for an upcoming episode of Keeping Up With The Kardashians Kourtney Kardashian's ex Scott Disick is seen firing up about being being left off the guest list to Khloe Kardashian's surprise birthday party in June.

Sitting in Kourt's kitchen with sister Kim Kardashian, eating one of their usual healthy salads, Scott said the fact that he didn't know about the celebrations was ''bullshit'' and blamed his ex for seeing to it that he felt unwelcome.

"Fuck, I didn't even get invited to her birthday. And I'm family. That was really sweet. That made me feel really good," rants an angry Scott to the sisters.

"There's only one person that would have gotten me not invited and that's Kourtney. I highly doubt that Khloe was like, ‘The last person I'd want at my surprise party would be Scott,'" Scott said before sarcastically went on, "It's cool. Honestly, I called my sister and I hung out with her the whole night. And then actually I called my mom after and was, ‘Hey mom, do you want to come over because I'm feeling a little down and lonely because the family that claims I'm still blood even though we're not together still doesn't invite me to a surprise party.' But I really felt good about it."

He continued: "I understand you not inviting me to your birthday, but your sister who I've known forever, longer than anybody else who was there outside of the family. Like I would have wanted to be there for her. I don't get it. Be honest."

Kourtney tells Scott that she only didn't have him there because she "didn't want to have [him] coming to the birthday and be photographed going in." But in a piece to camera the 38-year-old says she just didn't want the father of her three kids to be there.

"If I can't say anything nice, I just won't say anything at all," explained Kourt.

But the oldest Kardashian's white lie did nothing to placate Scott and he started to sound off.

"That's all bulls—t," Scott told her. "It's funny to realise just how fake you really are though."

Despite venting his fury at being left out by his ex, Scott currently seems happy dating 19-year-old Kardashian family friend, Sofia Richie.

The pair -- who have a 15-year age gap -- have been pretty inseparable since they went Instagram-offical with their romance a few months ago, posting photos of their lavish trips together.

But, even with his flourishing new relationship, on a recent episode of KUTWTK Scott admitted he’d like to have more children with ex Kourtney Kardashian, whether through sex or artificial insemination.

We're not sure if Kourt, whose currently dating Younes Bendjima, feels the same about more babies with Scott but judging by this recent clip we're guessing...