Kris Jenner is speaking her truth about the end of her relationship with Robert Kardashian Sr.
The Keeping Up With the Kardashians star recently sat down for an interview with Fox News Channel’s OBJECTified that touched on her marriage to the late lawyer, who was diagnosed with esophageal cancer in July 2003 and died less than eight weeks later at the age of 59.
In a sneak peek at the interview, set to air Sunday, PEOPLE reports, Jenner opens up about how infidelity tore the couple apart.
“I married Robert when I was 22 years old and I got pregnant on my honeymoon — I had the happiest life you could’ve dreamt about,” she recalls to host Harvey Levin. “But when you’re in something, sometimes people think the grass is always greener and that was like what I think I went through at some point.”
When asked about her “affair with a soccer player,” Jenner admitted that it happened.
“I did, I did,” she said. “Which wasn’t — nothing I’m proud of. When I look back on it now, probably one of my biggest regrets in my life is that that marriage fell apart.”
During the interview, Jenner admitted she was devastated when Kardashian filed for divorce.
“Because it made it real,” she says. “Like, you think you’re going to come through this period — that was really hard for me.”
Jenner had previously discussed cheating on her first husband in her 2011 memoir, Kris Jenner… And All Things Kardashian. In 1989, she had an affair with a professional soccer player ten years younger than her, which led to the couple’s divorce.