For a guy, this is a very painful movie. For a girl, it shows the ways she can hurt a guy without even knowing it. At the end of the relationship he sums it up by telling her 'You always want what you want the way you want it'.
This movie was worth it just for the interview with Dawkins. What a fraud. He says there is no God, but admits that there might be if God turns out to be an alien race that seeded the planet. As long as 'God' is like Spielbergs little green men who don't try to tell us what to do, it's okay. His book 'The God Delusion' is aptly named but not in the way he means. The God-haters have deluded themselves.