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Daniel Radcliffe’s mysterious girlfriend has been identified as Rosanne Coker.

The 22-year-old met Radcliffe while working as a production assistant on Harry Potter and the Half-Blood Prince in 2007. The two also worked together on the last two Potter films and The Woman in Black.

The couple began dating a year ago, and split their time between her family home in Surrey, England, and Radcliffe’s New York City apartment.

Rosanne’s father Malcolm, who runs a painting and decorating business, told The Daily Mail, “I don’t want to say too much really as they would really prefer to keep things quiet, but Rosanne has worked on the last three Harry Potter films, so she and Daniel have known each other quite a long time. But they have been going out for just over a year now.”

“I have met Daniel and he is a lovely guy. I’m just really happy for Rosanne and as long as she is happy that is all that matters to me,” Coker continued.

In an interview with Larry King last month, Radcliffe, 22, gushed, “I’ve got a girlfriend at the moment who I am very much in love with, so, you know, we’ll see where that goes.”

See photos of Daniel Radcliffe’s girlfriend Rosanne Coker

photo: Anthony Dixon/WENN