Kris Jenner admits, through her legacy video, that Robert Kardashian was a third party in her high school relationship, much to the surprise of her children.

Fans of the controversial reality family probably are not stunned of the recent revelations, especially that there are numerous shockers casually mentioned in every episode of Keeping Up With the Kardashians. However, Kim and Khloe were the ones who were startled with their mom's stories.

In a teaser for the next episode of their show, Kris, Khloe, Kim, and Scott Disick can be seen getting cozy in the living room, preparing themselves to watch a video. The Kardashian-Jenner matriarch revealed her excitement over her kids watching her legacy video, which was largely participated by Disick, and underlined that it is vital for kids nowadays to know what their parents might have been back in the days in order to learn from their past.

As soon as the tape started playing, the first bomb was revealed. Apparently, Kris, once upon a time, had a bone tumor in her leg, which Khloe said she was not aware of. The 62-year-old further narrated that her leg might have been amputated, had the doctors found it cancerous.

Love Affair

Then, the serious storytelling went on to a totally different path. Kris shared that she was 17 when she had a boyfriend, Caesar, who was always busy and was almost always out of town. This, Kris said, was when she met Robert.

"Robert came one day when Caesar was out of town," she continued, much to the disbelief of vocal Khloe who asked if they were "hooking up."

A casual "Yeah" came out of Kris's mouth, which prompted Khloe to joke that they got it from their mama.

Moreover, Kris said that Caesar actually tried to surprise her and went home early, only for him to get probably one of the most shocking revelations of his life. She explained that her then boyfriend had actually got a hold of Robert's sweater and left a hole in it, hinting of an altercation between the two men.

"Not proud of it," Kris explained, and added, "I didn't want to ever hurt anybody's feelings."

Even with a few eye-raising moments in the clip, Kim and Khloe appreciated the efforts of Disick. The 33-year-old then confessed she thought she knew much about her mom, but the video proved otherwise.

Robert is the father of Kim, Khloe, Kourtney, and Rob. He was a lawyer and a businessman and died on 2003 because of esophageal cancer.

Catch Keeping Up With the Kardashians on E! every Sundays at 9 p.m. ET for more revelations.

Tags: Keeping Up With The Kardashians kris jenner Robert Kardashian Kim Kardashian scott disick