And the differing characteristics have left some former boyfriends, who are unable to distinguish between art and real-life, confused.
Delpy says, "I had boyfriends fall in love with character, Celine, then they'd realize I'm not her and they'd dump me.
"I'm not as romantic as Celine - I'm much more down-to-earth, and kind of tough.
"My personality is about 90 per cent darkness and 10 per cent light, though I do have a sense of humour about it."
In the follow-up to the cult favourite - Celine and JESSE (played by ETHAN HAWKE) meet up again nine years after their first encounter in Paris where he is promoting his book and she lives.
Delpy - who helped write the dialogue - explains, "In your 30s, you have more of a sense of humour about things, especially love.
"You're more resigned to reality. In 'Sunrise' Celine was kind of soft, so this time I wanted her to have more of an edge.
"I wanted Celine to capture that contradiction I see in a lot of my female friends - how they're extremely strong and intelligent, but fall apart when they're heartbroken.
"And though I'm much less emotional, I can relate to that."06/07/2004 17:34