It’s been 20 years since Princess Diana‘s death — she passed away in a car crash on Aug. 31, 1997 — yet her ex-husband, Prince Charles, and his second wife, Camilla Parker-Bowles, still can’t shake the late Princess’ memory. It’s a widely known fact that the Prince committed adultery during their marriage, but what many don’t know is that the blonde beauty knew about the future spouses’ relationship (which began before she and Charles tied the knot) — and she wasn’t silent about it either.

Now, the host of two documentaries, including Diana: In Her Own Words, is revealing how the Princess really felt about her husband’s betrayal. “I remember crying my heart out on my honeymoon,” she said, likening herself to a “sacrificial lamb.”

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(Photo Credit: Getty Images)

We hate the thought of Diana that miserable in her marriage when it had only just begun. But, apparently, she didn’t let her sadness stop her from confronting Charles and Camilla about their affair. The Princess recounted fights she had with her husband about his girlfriend and what it was doing to their marriage. She even took it upon herself to speak to Camilla face-to-face.

“I said, ‘Camilla, I’d just like you to know that I know exactly what’s going on.’ And she said, ‘I don’t know what you’re talking about,'” Diana recalled. “I said, ‘I know what’s going on between you and Charles… Don’t treat me like an idiot.'” The world will always think highly of the beautiful royal.