Kris Jenner has revealed cheating on Robert Kardashian is her ‘life’s biggest regret.’

On the last episode of The Kardashians, Khloe Kardashian lashed out at Kris for cheating on her late father.

Picking up where they left off, Wednesday’s episode saw Khloe continue to probe her mother about her infidelity, asking what her ‘mindset’ was when she cheated.

Kris was left flabbergasted by the questioning but agreed to talk candidly about her 1989 affair with Todd Waterman, which prompted husband Rob to file for divorce in 1991 when he learnt of the betrayal.

Khloe began by saying: ‘When you did that, with my dad, and you had four kids, and you had a family, this whole thing. Yes, I know you were really young, which is a big factor.’

Lash out: After Khloe Kardashian lashed out at mother Kris Jenner for cheating on her late father Robert Kardashian, Kris said it was all part of ‘God’s plan’ on this week’s The Kardashians

Who, me?: ‘You’re asking me?’ Kris asks, as Khloe responds, ‘Yes, who the f**k else am I talking to,’ as last week’s episode came to an end

Kris Jenner opens up about why she cheated on Robert Kardashian

The affair reportedly began when Kris was 34 years of age, and she responded: ‘I think being really young and dumb is something that plays into it because you don’t really understand the consequences of your actions.’

Khloe then asked: ‘But what was my dad not doing that made you want to look elsewhere?’

Kris responded: ‘I don’t know because he was such a great husband and such 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 like my life’s biggest regret.’

Kris added in confession, ‘When I got divorced, Robert and I became best friends. We talked on the phone all day long, helped each other through things all the time and I did have regrets.

‘I thought, “Wow, what was I thinking?” So I just want Khloe to be really careful when she makes these decisions and she has to let somebody go.’

Kris added back at home: ‘You know, I’m not proud of the way that I behaved at that time, but you know what, everything happens for a reason. I really do live my life by thinking God has a plan and without that whole thing happening, there never would have been Kendall and Kylie.’

Kris then sighed and told Khloe: ‘I just want you to be happy,’ as Khloe added: ‘I already have my happily ever after with my kids. I’m totally happy. When you have a partner, you know, I always put that person first, and I don’t want to put anyone first but my kids. Life is short. My kids are this age only for…’ as Kris finished, ‘a minute.’

‘Literally a blink of an eye. And I am proud of myself for being with them, like diving into them as much as I have because it’s really easy to just be like, “No, someone else do it.” That’s not what I want to do in my life right now and it’s not who I’ve ever been.’

Kris added: ‘But how amazing for your kids and how amazing to have this experience with them and be so present, because a lot of people aren’t.’

Late ex: Kris was left flabbergasted by the questioning but agreed to talk candidly about her 1989 affair, which prompted husband Rob to file for divorce in 1991

Secret man: Kris began an affair with Todd Waterman in 1989. He was a soccer player for the LA Heat before becoming an Emmy-nominated animator and director

Affair: The affair reportedly started when Kris was 34 years of age, with Kris adding, ‘I think being really young and dumb is something that plays into it because you don’t really understand the consequences of your actions’

Not doing: Khloe then asks, ‘But what was my dad not doing that made you want to look elsewhere?’

Kris said in confession: ‘I move very fast and make decisions quickly. Khloe taking her time, that’s amazing, and I understand where she’s at, and I think it’s at a really healthy place. She is one of the strongest people I’ve ever met.’

Khloe told Kris: ‘I want to just enjoy my life with them and if I find a guy, then I’ll find a guy. That’s not my top priority, but I genuinely don’t want anything right now. I don’t want the responsibility of another person right now, so give me time.’

‘Deal,’ Kris said to her daughter.

While Kris had admitted to the affair in her 2011 book, she disguised his identity as Ryan Lowe, before Waterman came forward in a January 2012 Daily Mail interview.

Best friends: Kris adds in confession, ‘When I got divorced, Robert and I became best friends. We talked on the phone all day long, helped each other through things all the time and I did have regrets. I thought, “Wow, what was I thinking?” So I just want Khloe to be really careful when she makes these decisions and she has to let somebody go