Liam Hemsworth's romantic moments all come from movies.

The 19-year-old actor's girlfriend Miley Cyrus - who he started dating when they met on the set of 'The Last Song' - admits she can no longer take his gestures of love seriously after realising he was copying the characters he has played.

She said: "He got really lucky because he got put in a Nicholas Sparks movie, which makes you think he is romantic . but then you realise everything he's saying he's filming the next day, and it's all scripted!"

Miley recently revealed she fell for the Australian actor when they had their first on-screen kiss while filming 'The Last Song'.

She said: "That kiss definitely triggered something. It triggered something in my head that made me realise this was going to be a lot of fun and it made me realise that one day you can feel bad and the next you can meet someone who is your soulmate or your best friend or whatever and that's really cool."