Closer
Starring Jude Law, Julia Roberts, Clive Owen, Natalie Portman
Dan (Jude Law), a serial lover, becomes infatuated with a photographer Anna (played by Julia Roberts), and has an affair with her while living with "Alice Ayers"/Jane Jones (Natalie Portman). Anna has a relationship with and marries a perverted dermatologist (Clive Owen), while she maintains an affair with Dan.
Alice appears the most honest character in the film, yet at the end, we learn her name was just a facade, and in fact she was living possibly the largest lie of all the characters.
The vexing question with this film is: who is more reprehensible, the people who have lied about instances in their lives, or the people who live a lie?
Other themes include the games that are played in the name of love, and how love as a concept is often invoked with words, but without feeling.