Emma Watson had a boyfriend who didn't know she was famous.

The 20-year-old actress - who portrays Hermione Granger in the 'Harry Potter' movie series - is currently studying at Brown University In America and loves the fact the people she has befriended don't care about her stardom.

She said: "The amazing thing is that everyone here is interested in their own lives, so they aren't nosy about mine. I'm used to people being intrusive and gossipy, but I can be anonymous.

"My best friend at Brown has never seen a 'Harry Potter' movie or read the books. And one guy I dated didn't know anything about the films, much less that I was one of the stars, which I found hilarious."

Emma has just begun her second year at the college and though she is comfortable there now, she refused to have any verbal contact with her family when she first started studying as she was so homesick.

She explained to Parade.com: "Being at Brown has totally taken me out of my comfort zone. I'm so proud that I went to a different country to study and really spread my wings.

"I didn't call home for three months. I'd send text messages, but it was too hard to pick up the phone - I'd just burst into tears. Dad told me, 'Be yourself and you'll be fine.' My mum was more like, 'Make sure you wear a warm coat.' She sent me thermals and English chocolates."