Book Spotting Faux Pas

This morning on the train on my way to work (Take that, New York! It's beautiful here year-round, and I can take the train to work), I was When You Are Engulfed in Flames. When the train jostled into a station, I looked up to see a woman a little ways down the car reading it as well. I caught her eye and gestured excitedly, pointing to her and then back to me a few times, all the while, nodding knowingly. She gave me a creeped-out look and exited the train at what I don't think was her intended stop. Confused and, I suppose, a bit insulted, I went back to reading my book. It was then that I realized that I didn't have the jacket on my book, meaning that she couldn't see that we were reading the same book, meaning she probably thought I was suggesting something else. So to you, woman on the train, I apologize. I was just trying to make a literary connection, nothing else.