According to royal sources, Prince Charles had been changing his mind about Diana before her death. Princess Diana, too, was allegedly regretting her divorce from the prince. Tina Brown, royal biographer and author of "The Diana Chronicles," told The Telegraph that "At the end of Diana's life, she and Charles were on the best terms they'd been for a very long time." It was even reported that Charles would "drop in" on Diana at her apartments at Kensington Palace. "They even had some laughs together," Brown added.
Princess Diana was reportedly heartbroken when she and Prince Charles did finally separate and divorce, despite her own relationship with Captain James Hewitt. She even reportedly told Brown that she "would go back to Charles in a heartbeat if he wanted her." So why the change? According to Brown, Diana had come to terms with the fact that Camilla Parker Bowles was "the love of his life, and there was just nothing she could do about it."
Even with the prince's strong feelings for Camilla, there was no denying the connection he and Diana shared. Simone Simmons, a friend of Diana's, told the Daily Mail (via Express) that Charles and Diana were close friends following the divorce because "she understood him." It wasn't until her death that Charles, according to Simmons, even realized "how much he loved Diana." Camilla may be the love of Charles' life, but there's no denying the hole left in the prince's life after Diana's death.