Cheating?

Last Tuesday my friend Olivia said "Guess what my mom brought home today. Fablehaven Five!" I immediately had to find out where her mom had gotten it from, and she had gotten it from the Smith's in Pleasant Grove. I had Dad drive me there and I bought it, feeling excited, but appalled at the same time. Why was it there at Smith's, of all places? Is it fair to read it now, when it isn't technically out yet? What is going to happen to Kendra and Seth in this book? What should I do? This seemed like a perfect solution...I'll know what happens! Yea! But isn't that sort of like cheating, because it isn't out yet?
So I kept on reading my current book, (Book of a Thousand Days, by Shannon Hale. This was probably my fourth time reading it-SO GOOD) and after a day or two read a couple chapters in Fablehaven Five. But I felt so guilty! It's not out yet, and there I was reading it! I tried explaining that to Olivia, who didn't seem to understand what I was saying at all. What's worse is that for Missionary Month, the week it actually does come out I can't read it, (I can only read church books that week) so if I waited till the day it does come out and then read it, I wouldn't be able to anyway. So I finally just stopped reading it, and I suppose I'll have to wait a whole week after it actually does come out to read it...am I weird to feel like I was cheating? Now I still have to wait, even though it's sitting on my bookshelf RIGHT NOW! This is so confusing.