Scott Disick is finally apologizing for all his past mistakes. In a sneak peak clip from the next all new episode of "Keeping Up with the Kardashians," Disick breaks down into a fit of tears as he meets with his former longtime girlfriend Kourtney Kardashain and her family, including Khloé Kardashian, Kim Kardashian and Kris Jenner, to apologize for all the trouble he caused in the past.

"This is the stuff that I don't understand: you say, 'Oh, I don't have a family and I don't have all these things,' and then we give you one. Why do you destroy it?" Khloé asked the emotional father of three.

"I'm sure you guys have heard a lot of horrible things about me that I should have just been honest with but I was too ashamed that I was going to hurt everybody in this family and not just her," Scott said as he fought back tears. "I've apologized to Kourtney a hundred times but I've never apologized to like all of you for letting all of you down and embarrassing you guys."

"I understand I need to help myself before I can help her or my kids," he added. "It has just been a really hard time, going from having all of you guys to having nobody."

Disick and Kourtney broke up over the summer after they spent nine years together, as HNGN previously reported. The former couple share three children together, Mason, 6, Penelope, 3 and Regin, 1.

"Keeping Up With the Kardashians" airs Sunday at 9 p.m. on E!

Check out the emotional preview below.