Caitlyn Jenner claimed she was "mistreated" by Kris Jenner.
The 65-year-old former Olympian—who was previously known as Bruce Jenner before undergoing a gender transition—says she chose to end her relationship with the 59-year-old television personality because of the way she was treated.
She said: "Twenty percent was gender and 80 percent was the way I was treated...
"A lot of times she wasn't very nice. People would see how I got mistreated. She controlled the money... all that kind of stuff."
Caitlyn also admitted things changed when the pair secured a contract for Keeping Up With The Kardashians.
She added: "The first 15 years I felt she needed me more because I was the breadwinner...
"Then really around the show, when that hit and she was running this whole show and getting credit for it and she had her own money, she didn't need me as much from that standpoint.
"The relationship was different. I think in a lot of ways she became less tolerant of me.
"Then I'd get upset and the whole relationship kind of fizzled."
However, Kris refutes this and says the pair split because of Bruce's "social anxiety."
Speaking to Vanity Fair magazine as part of Caitlyn's cover shoot, she said: "He was married to me and he wasn't 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?'"