"Hey, sleepyhead," Shelby nudges me. "I need to take Daisy for a run. You coming?"

I can't even dignify her with an answer. I peer at the bedside clock, which reads five in the morning, tug the pillow Shelby used last night over my head, and fall back to sleep with Shelby's soft laughter floating through the room.

I wake up to the smell of bacon. The clock tells me it's a few minutes after seven. Even with my late-night adventure, I feel refreshed. I jump in the shower and ...