Let me start by saying how insanely entertained I was. Now, on to the synopsis.
Debbie is in love(like serious stalking time love) with her best friend, and has dedicated the last five years to being the person Debbie thinks that Lisa would want to date. Yes, I said Lisa, and yes she is a girl, in love with a girl(I forgot to read the back and ended up not knowing until she said it). So anyhow, Debbie writes a list about why she is not a wacky sidekick for Lisa, and puts in her backpack, which she then forgets in a fit of rage. Why is this list important? I think you already know. Go read it, I'm serious this book will leave you in a fit of giggles(sorry if you don't enjoy giggling), the same way when you started it.