she would do if she could be anonymous for a day, The Black Swan actress said: "I would make out in the park! That's the thing I would most enjoy doing in New York, and it's something I'll never do. I'd also have loud, public conversations with my friends about personal things. Even if no one is paying attention – and most of the time, no one cares – you never know who is at the next table."

Natalie, 29, also revealed she appreciates the same qualities in her boyfriends as she looks for in a friend, but with sexual attraction.