Charles Spencer cheated on every single one of his ex wives - often when they were pregnant.
In a birthday speech he called his 1st wife "thick and thin" when she was in the middle of an anorexia crisis. He described himself as vicious, cruel and a bully to her.
He dumped one of his ex wives via text, didn't attend 2 of his children's weddings.
Allegedly seduced his friend's wife, while the friend was in prison.
Another engagement was called off after a year in the midst of claims of "heated exchanges" tabloid speak for domestic violence
He cheated on his 4th wife with his current wife, I think he also sued her, but lost the case.
He is estranged from most of his adult children.
He was also cruel and dismissive of Diana, as shown in court. They hadn't been close for a decade and a half - he told her he was glad to be a less than peripheral figure in her life.
Meanwhile Diana told friends and journalists that her and Charles had established a friendly and relaxed co parenting relationship in the 2 years before her death, meeting each other weekly. Tina Brown (a close friend of Diana's) wrote that Diana had told her she would take Charles back "in a heartbeat".
Charles Spencer has been selling off property and auctioning items to raise funds. He started monetising his sister within weeks of her death, this is just a continuation of that.
He never mentioned to anyone before now about these alleged conversations? (other than to CNN and Larry King where he said KC had been polite). Doesn't pass the smell test to me.