Meanwhile, Matt Damon has branded his love scenes with Angelina Jolie "weird".
Damon, who is close friends with Jolie's lover Brad Pitt, has admitted he
found it difficult filming the steamy scenes.
He told US TV show 'Good Morning America': "Doing a love scene with the
girlfriend of a good friend is weird. We all know each other."
Jolie, 31, revealed Pitt supported their scenes and even wished them luck.
She added to the programme: "In reality both the people we're involved with
couldn't have cared less about that because they know us. It's one of those
things where it's like the least threatening person. You know, 'Good luck to
you guys, I hope it's not too awkward.'
She added: "The difference between kissing Matt and kissing Brad is simple.
One's a friend and one's my lover."
While Jolie was happy to kiss her lover's friend, she found it harder to
play a character who was her complete opposite in real life.
She said: "I realised early on this was going to be the film where I am the
weak victim."
Damon added: "In one scene she had to act so apologetic and just so unlike
Angie."
In the film, Damon plays one of the first CIA spies and Jolie portrays his
wife who is left crushed by his lies.