"Tell me, when you're alone do you sometimes think about your partner and feel sad?"

"Of course," he says. "It happens sometimes. When the moon turns blue, when the birds fly south, when - "

"Why of course?" I ask.

"Anyone who falls in love is searching for the missing pieces of themselves. So anyone who's in love gets sad when they think of their lover. It's like stepping back inside a room you have fond memories of, one you haven't seen in a long time. It's a natural feeling."

Kafka on the Shore ~ Haruki Murakami.

I'd quite like to live in a Murakami novel.