Rachel McAdams - who famously locked lips with ex
Ryan Gosling in the 2004 tearjerker
the notebook - says hooking up on the big screen is "strange.
'A kiss with anyone, on or off camera, can be intimidating,' she tells
The New York Times magazine,
T. "I've been kissing for nearly two decades now, and I'm always convinced I'm not doing it right.
'Chemistry is so important in a great kiss,' she adds. 'You can act your way through anything, but it's hard with a kiss. It's much better if there's an attraction.'
McAdams - who plays a soldier on leave from Iraq in September's
The Lucky Ones - also says she has yet to embrace the glamorous Hollywood lifestyle.
She prefers life in her hometown of Ontario, Canada - where she once worked at a local McDonald's for three years.
'I'm not sure why they kept me,' McAdams says of her days at the fast-food joint. 'I was something of a daydreamer and a dawdler, so they would only let me be the 'friendly voice' that greeted you when you entered the restaurant.
'I was slow - I would be organizing the sweet-and-sour packets in the customer's takeout bag while the line snaked out the door,' she continues. 'Even at a fast-food restaurant, I wanted everything just right!