Kris Jenner's sister claims Bruce ''walked out'' on her.
The reality TV star's younger sibling Karen Houghton believes it was the Olympic gold medallist, not Kris, who called time on their 22-year marriage in October.
Karen told RadarOnline.com: ''Bruce left. He walked out on her, and I think he's not coming back. He couldn't take the yelling anymore and stuff. I think she's got issues right now because Bruce left her.''
Although, the 53-year-old nurse insists Kris and Bruce's separation has done them the world of good because now they're ''not on each other's backs all the time and yelling at each other telling each other what to do.''
However, the former couple - who have biological daughters Kendall, 18, and Kylie, 16, as well as eight other children from previous relationships - have recently sparked rumours of a reconciliation after they were spotted walking hand-in-hand in Los Angeles in March.
Bruce, 64, even drove from his bachelor pad in Malibu to Thousand Oaks, Los Angeles, last week to be by Kris' side after she was hospitalised for mysterious ''internal pains''.
Earlier this week, the 'Keeping Up With the Kardashians' star also declared her love for Bruce by posting a touching tribute online to celebrate their 23rd wedding anniversary.
The matriarch shared an old photograph of them on Instagram, with the caption: ''Happy Anniversary to one of the most amazing men I know!!!! I love you, Wow 23 years!!!!! #love #weareofficiallyvintage (sic).''
The '12 Years A Slave' director will receive the accolade at the London Film Festival in October.
Critics from all over the world were asked to name the best movie of the past 16 years.