Watson, 20, who plays Hermione in the movie series, has to kiss her co-stars Daniel Radcliffe and Rupert Grint in the last film, Harry Potter and the Deathly Hallows, which is being split into two parts.
'Putting all that aside and being in character was pretty bloody hard, it really was. That required a huge amount of professionalism. I really had to grit my teeth and be like: 'I am Hermione, this is Harry - stop thinking that it's Emma kissing Dan. It's not. It's all good.''
