Prince Harry and Emma Watson: Harry Potter star responds to dating reports on Twitter

Emma Watson has responded to reports that she has been secretly dating Prince Harry.

Rumours that the 24-year-old actress, who is well known for her role as Hermione Granger in the Harry Potter films, and the 30-year-old royal are dating, started after Australian magazine Woman's Day reported that the two have been going on secret dates.

Watson took to her Twitter account, to squash the relationship rumours.

Prince Harry, who has been voted among the world's most eligible bachelors, has previously dated Cressida Bonas and Chelsy Davy. He also shared a brief fling with Jenson Button's former girlfriend Florence Brudenell-Bruce.

Meanwhile, Watson was in a long-term relationship with William Adamowicz, but broke up last year in January. She split with her rugby-player boyfriend Matthew Janney at the end of last year.

During an interview with Elle, she mentioned one of her favourite lines from her film, The Perks Of Being A Wallflower and how it has affected her love life.

"We accept the love we think we deserve," she said. "I haven't always dated supernice guys. I guess it resonated with me in that way. That line was a real kind of, Okay, I have a responsibility to myself."