As Hermione Granger in the Harry Potter films, Emma Watson exudes squeaky clean innocence.

But it appears the 18-year-old leads a typical teenage life off-screen, if her date last night with a young Italian actor is anything to go by.

The cute couple enjoyed drinks at the trendy Sway bar in central London, less than two weeks after they were photographed cosying up to one another at a society polo event in Windsor, Berkshire.

Gallant: Camera-shy Roberto Agnillera carries Emma Watson's bags as they leave a London bar

The teenage actress proved a hit at the Cartier Polo day out, where there was no shortage of male admirers, including Roberto Agnillera, fighting to help her enjoy the occasion.

But it looks like Emma's suitor, who she met at RADA, is a keeper - the gallant actor both carried her shopping and shied away from the cameras when paparazzi caught up with the courting twosome.

Dance with a Granger: Emma Watson parties with actor Roberto Agnillera at society event Cartier Polo last month

Her night out is unlikely to please her purported boyfriend, 25-year-old financier Jay Barrymore.

Miss Watson, who split from her first boyfriend, Tom Ducker, 17, last year, has just completed filming the sixth instalment of Harry Potter.

She has decided to study Shakespeare at RADA, having finished her A-levels.

Bonding with a blond: Emma chats to Michael Walker at the Cartier Polo event

Also at the polo event, a champagne-swilling Emma gave her companion Francis Boulle a knowing look