After refusing to follow Emma Watson to England, actor Johnny Simmons' romance with her is reported on the rocks. The two met on set of the movie "The Perks of Being a Wallflower" to be released next June.

Last September the couple shared a romantic break in New York City and the 21-year-old actress, famous for her role in the "Harry Potter" movies, begged the 24-year-old Los Angeles-based Simmons to come with her to England, where she just enrolled in Oxford University.

Simmons refused to move. A source close to Watson said she has defined the relationship as complicated.

"Johnny has been very distant with her and she's worried that it's because he's overwhelmed by her fame. They've not seen each other in a while and they've barely spoken. She has invited him to come to Oxford, but he has not accepted the offer yet," the source said. "She doesn't want things to be awkward when they reunite to promote the film, but she's worried the relationship is over before it even began."

Watson, in spite of being an actress with a busy career, plans to spend a year studying English at Oxford before she completes her degree at the Brown University in the U.S.

See photos of Emma and Johnny as they were snapped together in public.

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