While some girlfriends prefer to keep quiet, it looks like Caroline Flack is the type who likes to kiss and tell. The British X Factor host has dated both Prince Harry and One Direction's Harry Styles, and now she's dishing on the two men in a very revealing tell-all autobiography.

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According to People Magazine on Monday, Flack is currently doing the media rounds to promote her new book, "Storm In A C Cup," and she's not holding anything back. The television host met Prince Harry through mutual friends back in 2009.

"I knew she was friends with Prince Harry, and I'd never met him, so I thought, 'Oh, that's quite exciting,' and for a moment I perked up," she wrote in her book. "So I was just sitting there and he arrived with a few others in tow and we all spent the evening chatting and laughing."

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Flack also said that the couple ended their relationship as fast as it began because she didn't want to ruin her reputation by dating a royal.

"Once the story got out, that was it. We had to stop seeing each other," she continued. "I was no longer Caroline Flack, TV presenter, I was Caroline Flack, Prince Harry's bit of rough."

Flack also opened up about Styles, who she met back in 2011, when he was 17 and she was 31.

"I already knew that he had a crush on me, he'd made it pretty obvious. He'd said it in magazines and he'd said it to friends," Flack writes. "Although it was just a bit of fun we decided it was best to keep it to ourselves ... We were both single, we got on well and we had a laugh."

Flack's book hits bookshelves on Oct. 22.

For more, keep up with Enstars for all the latest news on Prince Harry, Harry Styles and all of your favorite British celebrities.

Tags: Prince Harry