During Thursday’s episode ofThe Kardashians, Kris, 67, opened up to daughterKhloé Kardashianaboutcheating on her father,Robert Kardashian Sr.with soccer player-turned-animator Todd Waterman in 1989, and why she felt it was her “life’s biggest regret.”
The revelation occurred as the two were chatting about Khloé’s exTristan Thompsonand the Good American founder, 39, asked her mom, “What was your mindset when you cheated?” She added, “When you did that with my dad, and you had four kids and you had a family? Yes, I know you were really young….”
Kris calmly responded, explaining that “being really young and dumb is something that plays into it because you don’t really understand the consequences of your actions.”
Kris Jenner and Robert Kardashian Sr. with their kids, Robert, Kourtney, Khloé, and Kim.Kris Jenner Instagram

Kris Jenner Instagram
Khloé still wasn’t fully understanding and asked her mom again, “But what was my dad not doing that made you want to look elsewhere?”
Kris then admitted, “I don’t know because he wassuch a great husbandandsuch a great dad, and I think that I fell into a situation where I thought that the grass was greener somewhere else, and I made a huge mistake. That’s my life’s biggest regret.”
Rob Kim/Getty

Kris opened up further in a confessional interview, explaining why she hopes her daughter will think before completing cutting ties with Tristan, who’s the father of Khloé’s daughterTrue, 5, and sonTatum, 13 months.
“When I got divorced, Robert and I became best friends. We talked on phone all day long, helped each other through things all the time, and I did have regrets,” Kris explained. “I thought,Wow, what I was thinking?So I want Khloé to be really careful when she makes these decisions and she has to let somebody go.”
Back in their conversation, Kris told Khloé that while she may have regrets about cheating, she’s also pleased with how everything ultimately turned out.
Kris was married to Robert Sr. from July 1978 to March 1991. They welcomed four children together:Kourtney,Kim, Khloé andRobert Jr.
Kris met Caitlyn (whopublicly came out as transgenderin 2015) in 1990, one year before her divorce from Robert Sr. was finalized.
In a recent interview withThe Times, Kris revealed that the two “hit it off right at the beginning, and we were married after five and a half months.”
“I was infatuated with her, because she was very different from me. But yes, I’d have to say, it was love at first sight,” she added.
From left: Kris Jenner, Khloé Kardashian, Kendall Jenner, Kourtney Kardashian Barker, Kim Kardashian, North West, Caitlyn Jenner and Kylie Jenner.Kevin Mazur/Getty

Kris and Caitlyn tied the knot in April 1991, one month after her divorce from Robert Sr. was finalized. The pair — who share daughters Kendall, 27, and Kylie, 26 — had been together for 22 years when they announced their separation in 2013. (Theirdivorce was finalizedin December 2014.)
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New episodes ofThe Kardashiansdrop Thursdays at 12 a.m. ET on Hulu.
source: people.com