Keira Knightley is struggling to find balance in her life - because she doesn't know whether to concentrate on romance or her career.
The actress has dated fellow Brit Rupert Friend for more than four years, but admits she finds it hard to commit to a man because of her movie career.
She tells the Australian edition of Marie Claire, "It's hard to have a relationship when you're working so much. But then you have to think, 'What is actually important in life? Is career your only thing?' If it is, then it's easy, but if it isn't that's sad, because there's going to come a day when you're left lonely. It's a difficult balance.
"I think you've got to strive for balance. It's the striving that counts. If you're someone like me, who has always been very driven, to suddenly step back and decide, 'Well, love is the only thing', then you need to build up your relationships."