The X Factor host was on the show to promote her autobiography Storm In A C Cup, which touches on past rumours of a romance with the royal.
Caroline has made clear that she doesn't go into details about Prince Harry in the book but that didn't stop Ben Shephard and Holly Willoughby asking!
But Cazza kept tight lipped!
"I do make a point in the book, I don't talk about Prince Harry. It's just not my place to talk about someone else and anyway, I don't think you can talk about how someone else feels. This is all about how I felt," she said.
"It wasn't really a relationship. The thing is, I had to talk about the fact of the effect it caused. That's what I talk about because it was so intrusive. People standing at my dad's house, at my mum's house, my brother's house, my sister's house, my nan's house, and literally just going for my family. It's important to talk about stuff like that as that's not normal!"
Caroline reiterated that she only mentioned Prince Harry in the book as the publicity it generated was part of her life she couldn't just gloss over, but insisted she did not go into any details.
As for whether she contacted him about the book, she said: "Yes. I contacted everybody. But [what they said] is between me and them. I would never put anything in a book that they didn't want in there. Because that is their life but these are my feelings."
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