Miss Watson, 18, and Angus Willoughby, 19, met while studying at the Royal Academy of Dramatic Arts in London. They are now planning a holiday in Mr Willoughby's home town of Perth and a tour of the region's beaches and wineries, according to the West Australian newspaper.

Mr Willoughby is the son on an Olympic rower and is reported to be a keen sportsman who loves rugby. He has a background in theatre, having captained his school's drama group and taken part in several productions.

Miss Watson, who is estimated to be worth £10.5million, is the seventh highest-earning young person in British showbusiness. She earned pounds 2.8 million last year alone. She has previously been linked to Italian acting student Roberto Agnillera and earlier this year dated 25-year-old banker Jay Barrymore.

Last month she was reported to be considering starting a degree at an American university. Harvard officials confirmed the actress visited the campus and toured dormitories. Miss Watson said: "I've applied to a few universities for next year, including several American ones. If I do go there, I will do a liberal arts degree, but if I stay in the UK, I'll do English literature."