The Proposal (2009)

When high-powered book editor Margaret faces deportation to her native Canada, the quick-thinking exec declares that she's actually engaged to her unsuspecting put-upon assistant Andrew, who she's tormented for years. He agrees to participate in the charade, but with a few conditions of his own. The unlikely couple heads to Alaska to meet his quirky family and the always-in-control city girl finds herself in one comedic fish-out-of-water situation after another.

Official website: http://www.proposalmovie.com.au