Husband: Still up?
Wife: I'm thinking what I should do tomorrow. Why don't you tell me a story to help me sleep?
Husband: Alright. It's an old tale.
Wife: It's ok.
Husband: Once upon a time, there was an old couple. The husband walk forward in great strides, the wife fell behind with her little steps. She didn't understand why he was in a rush, and he didn't understand why she walked so slowly. Nevertheless, they didn't give up on the waiting of catching up. Because they love each other so much.
Wife: Well, i think the story is sad.
Husband: Why?
Wife: Even though they love each other, but one is in the front and the other at the back. They're never together to care for each other.
Husband: That's true. But they can try to get it all back.