The 23-year-old star, who has previously dated co-star Penn Badgley, confessed she hates shooting on-screen action.
She told British Mizz magazine: 'It's the most awkward thing! There's a room of 40 people watching you, and they're telling you how to move your head - and it's totally silent. It's awful.'
Lively also claims she is a shy girl and apart from her on-screen romances, she has only locked lips with a trio of people.
The Green Lantern star added: 'Three, aside from kisses for TV and the movies, I'm weird! I hope Brad Pitt doesn't read this - he's never going to want to marry me.'