Caitlyn Jenner opened up about her split from ex-wife Kris Jenner in her Vanity Fair profile , revealing their marriage fell apart because of mistreatment and not gender issues.

Caitlyn and Kris Jenner married in 1991 and were together 16 years before their home life morphed into a pop-culture phenomenon with the 2007 premiere of "Keeping Up with the Kardashians." As Kris Jenner became more financially independent because of the show's success, Caitlyn Jenner said, things changed.

"The relationship was different. I think in a lot of ways she became less tolerant of me. Then Id get upset and the whole relationship kind of fizzled," Caitlyn Jenner told Buzz Bissinger for Vanity Fair , per Us Weekly. A lot of times she wasnt very nice. People would see how I got mistreated. She controlled the money all that kind of stuff."

Adding: "Twenty percent was gender and 80 percent was the way I was treated."

However, the famous momager told Bissinger that it was her ex's social anxiety that took a toll: "He was married to me and he wasnt who he wanted to be so he was miserable ... All I was doing was working very hard for my family so that we could all have a wonderful future, and he was pissed off. At the end of my relationship with Bruce he definitely had a lot of social anxiety ... That was one of the reasons we were in a struggle at the end. We fought a lot because we would go out together and before we got to the end of the block we were in a fight because he started saying, When can we go home?"

Bissinger said Kris Jenner was "very open" during the Vanity Fair interview .

"She said, 'I didn't know ... I had no idea about the extent of his gender issues, really the severity,'" he said during a "Today" show appearance Tuesday. "I've got to say, I think she's right. I think Bruce downplayed it [as] 'It was a phase of my life, it's over.' It wasn't over, and I think Kris had a sense that whatever happened in the past I can fix it."

Caitlyn, 65, and Kris Jenner, 59, split in October 2013 after 22 years of marriage. Their divorce was finalized by a judge in December 2014 and they were officially divorced in March 2015, according to E! News.

Kris Jenner tweeted her support for Caitlyn Jenner following her April special with Diane Sawyer on "20/20."

Read more from Caitlyn Jenner's interview in the July 2015 issue of Vanity Fair , on newsstands June 9.