(Cover) - EN Showbiz - Emma Watson's boyfriend has reportedly moved in with her.

The British actress is believed to be smitten with American hunk Johnny Simmons. Emma has invited him to stay at her 2 million family home while he is in the UK.

The beauty is keen to show the actor around London and their romance is blossoming.

"Things are getting pretty serious between Emma and Johnny so she wanted to take him back to London to meet her parents," a source told British newspaper The Sun. "They've been having a brilliant time together. Emma knows the city like the back of her hand so is a great person to show him around.

"They've done loads of tourist spots but she has also been taking him to a few flea markets and some great local pubs.

"They've been taking bikes or eco-cars to every tourist trap in the capital, including the London Eye, Big Ben and St Paul's Cathedral."

Emma, 21, and Johnny star in new drama The Perks of Being a Wallflower. Despite denying they are romantically involved, the pair were seen kissing outside a restaurant in Santa Monica earlier this month.

The couple were spotted together in a park in June. Johnny, 23, was also seen pinching Emma's butt at the MTV Movie Awards after-party. (C) Cover Media