has been named most romantic movie in a new British study measuring viewers' emotional reactions.
The poll ahead of Valentine's Day found the 2003 tale triumphed ahead of other love stories such as Dirty Dancing and Ghost.
Online movie rental firm LoveFilm examined the neurological responses of couples to what they saw on screen, with the Richard Curtis-directed tale giving the strongest reaction.
The Notebook, starring Ryan Gosling and Rachel McAdams, was runner-up.
"When a couple watch a romance together each person mistakenly attributes a part of the adrenaline buzz produced by the film to the presence of their partner, said Neuropsychologist Dr David Lewis, of Mindlab International, who analysed the reactions.
"Couples are far more likely to touch, hold, hug and kiss one another than couples watching a less emotional film," Lewis said.
"Our research shows that romantic movies can cause a romantic reaction, which is why snuggling up with a carefully chosen film is the perfect way to spend time together this Valentine's Day," said LoveFilm editor Helen Cowley.
Top 10 Most Romantic Films
1. Love Actually
2. The Notebook
4. Notting Hill
5. Dirty Dancing
7. Pretty Woman
9. Jerry Maguire
What's your favourite romantic movie?