"No," I beg. "Please, Ethan. We can survive this together." The gun was at his temple, ready to shoot. Ready to kill my fiancé.

"I can't. I lost my family, Jo. I lost them, and my best friend, and even if we survive, the world won't be the same. I just can't do it anymore."

"But you can't just leave me here!" Now I'm crying, really bad. "Ethan, I love you. Don't do this."

He closes his eyes, biting his lip. "I'm really sorry about this," he said, tears welling up in his eyes, "but I love you."

"NO!" I screamed. He pulled the trigger. I start sobbing, rushing to him and the life drains from him. "Ethan! No . . ."

I close my eyes and fall down next to him, looking at the dimming lights on the ceiling. Outside the fog is still killing. It's what killed my little sister, Riley. And even if it's not direct, it's what killed Ethan too.

I don't have anyone. I lost them. They're all gone.

I sob again. They're all gone.

I glance at the gun, still in Ethan's hand. It wasn't such a bad idea, I think as I pick the heavy weapon up.

But I don't have anyone to say bye to, to tell that I love them. I just pull the trigger.