“The relationship had been on the rocks for a long time,” the insider dished.
Brandon was extremely jealous of it and made her know it."
It’s just who she is."

Kelly is looking forward to moving on and successfully co-parenting with Brandon."
In addition, sources revealed what really transpired between Clarkson and Blackstock before their split.
“The marriage was really, really awful at the end.

She had a lot of questions that he just couldn’t answer,” the source revealed.
“She had tremendous resentment toward him.
She just wasn’t willing to look the other way anymore.”
Meanwhile, Clarkson is said to be happier now that she and Blackstock are close to finalizing their divorce.
An insider shared, “Kelly has no regrets about filing for divorce.
She only stuck it out for as long as she did for her kids.”