Ah, married life. So complicated, so beautiful.

In this exclusive five-minute clip from 'Last Night,' husband and wife Michael (Sam Worthington) and Joanna (Keira Knightley) head out to a New York City party for Michael's work.

'Last Night' First Five Minutes


The couple seem like any other in the city, but one night is about to drastically change their relationship. In this exclusive Moviefone clip, Joanna and Michael take a quiet cab ride. They're like many couples who've been together for a while -- comfortable, happy.

Later, inside, Joanna notices Michael out on the balcony talking to a mysterious female co-worker.

Her face says everything she's feeling.

'Last Night,' directed by Massy Tadjedin, is the story of a couple seven years into a successful and happy relationship. They are moving along in their lives together until Joanna meets Laura (Eva Mendes), the beautiful colleague Michael never mentioned. While Michael is away with Laura on a business trip, Joanna runs into an old (but never quite forgotten) love, Alex (Guillaume Canet), and agrees to have drinks with him. As the night progresses and temptation increases for the couple, each must confront who they are inside and outside of their relationship.

'Last Night' is available on demand April 20, 2011 and opens on May 6, 2011 in theaters across the country.

For more info, check out 'Last Night''s website or find them on Facebook or Twitter.