Scott Disick is finally revealing the real reason behind his non-stop partying in recent years.

In the upcoming episode of “Keeping Up With the Kardashians” (via People), Disick and Kardashian will have a one on one conversation about their failed nine-year-relationship. The dad of three tells his ex-girlfriend, “Like you love that you’re able to hold this over me and that’s like your control factor.”

Kardashian fires back at Disick and says, “And I feel you think you can go out and do whatever you want and purposely try to hurt me and still get invited to everything.”

But Disick said that he’s been partying and hooking up with women not because he hates Kardashian, but because he loves her so much that he wants to spite her. However, the eldest daughter of Kris Jenner is not buying Disick’s reasoning.

“That’s not a way to show your love… When someone’s trying to [expletive] with me, I’m not having them at my sister’s party,” she said.

Earlier this week, E! released another teaser from Sunday’s episode of “Keeping Up With the Kardashians.” In the clip, Disick expresses his disappointment over not being invited to Khloe’s birthday bash. “I didn’t even get invited to her birthday. And I’m family. That’s really sweet. That made me feel really good,” he said sarcastically.

Meanwhile, Khloe overheard her sister and Disick talking, and she seemingly suggested that Kardashian move on from the father of her child. “We gotta get off the ride at some point and get on a new one. It’s the same old story over and over and over again,” she said.

Kardashian seemed to be in favor of Khloe’s suggestion, and she tells Disick that she won’t stick around until he gets better. “We’re not going to sit here and go over it again for the 100th time in 10 years or more. You really don’t know what you should be doing? You’re going to tell me that? You’re one of the smartest people I’ve met,” she said.

But instead of taking thing seriously, Disick replied, “Aw, you wanna make out?”

Check out the rest of the ex-couple’s conversation on “Keeping Up With the Kardashians” on Sunday at 9 p.m. EST on E!

Scott Disick, Kourtney Kardashian Scott Disick and Kourtney Kardashian will have a confrontation in “Keeping Up With the Kardashians” on Sunday. Pictured: Disick, Kardashian arrive at the Marquee Nightclub at the Cosmopolitan of Las Vegas Feb. 14, 2011. Photo: Ethan Miller/Getty Images for AG Adriano Goldschmied