Because promises matter. They matter now more than ever.

The next time you better have a good reason," I tease him. "Okay." He kisses me again. "Reason?" I ask softly. "Um. You're really pretty?" "That's a good one. I don't know if it's true, but it's good.

Maybe the last human being on Earth won't die of starvation or exposure or as a meal of wild animals. Maybe the last one to die will be killed by the last one alive.

If the world breaks a million and one promises, can you trust the million and second?

Sarcasm doesn't appear to work on him. If that's true, I'm in trouble: It's my normal mode of communication.

Do you know how to tell who the enemy is, Cassie?

Are you okay?" I (Cassie) call up to him. "Um. Define okay." (Ben) "Okay means you're not bleeding to death." "I'm okay.