"I was thinking how nothing lasts, and what a shame that is."
- Benjamin Button, The Curious Case of Benjamin Button
They are two people of roughly the same age who are in love with each other, but whose clocks are simply running in different directions, and who only have one moment - one burning passionate moment that will define them both forever but it's still just one moment - to point to and say that it had ever been real, had ever been more than a sprawling daydream.