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Following the release of the emotional first teaser for season 11 of Keeping Up With the Kardashians, Scott Disick fought back against his critics on Instagram, while his ex, Kourtney Kardashian, tweeted about the benefits of being alone.
"Stop talking, peasant," the father-of-three Instagrammed to his 10.9 million followers along with a pic of him sipping out of a coffee cup, pinkie up.
Meanwhile, Kourtney tweeted to her 16 million followers that she's taking advantage of her time being single.
"Being alone and actually sitting with our own thoughts can lead to such growth and realizations that are rare in our everyday busy lives," she wrote.
"Kourtney won't be taking Scott back anytime soon. It's final this time," a source close to Kourtney told ET. "Kourtney is doing the best that she can to stay strong for her three children right now. Her first priority are those kids and she'll do anything to make sure they don't get hurt."
That being said, our source added, "She will never keep Scott away from them. He is allowed to see them whenever he wants. The only time they speak is when it has to do with them."
Scott and Kourtney's social media posts come just hours after the new KUWTK promo showed Kourtney, 36, crying over reports that Scott, 32, had been cheating on her. "I worked so hard to keep this family together," the reality star says, tearing up.
The teaser also reveals Scott's return to partying -- a "crazy bender," according to Kourtney -- and the family first learning of his intimate vacation with ex-girlfriend Chloe Bartoli.
"When those pictures of Scott with Chloe came out (in July), Kourtney was really hurt. She knows about Scott's history with Chloe and that was the one girl she didn't want him to ever hang out with," ET's source said. "Scott and Chloe were hooking up while Kourtney was on a break with Scott …right before she became pregnant with [their oldest son] Mason. Kourtney always had a bad feeling when Scott saw Chloe after that."
"He's a piece of s**t," Kris Jenner exclaims in the teaser upon first seeing the incriminating pics.
ET also spoke with the momager just a few days after news broke that Scott and Kourtney had called it quits. "She's good. Kourtney's good," Kris said, resolutely. "[She's] hanging in there."
"Kourtney really went through a lot of heartache with Scott," ET's source close to the reality star added. "Their relationship has been rocky for years. It's just starting to hit her now that it is in fact over, and she is trying to mentally prepare herself to move on."