Sexiness sells. But outside of steamy romance novels, how does that apply to literature? What’s the carnal thrust of listening to someone read — even at a bar, where flirtatious glances rain from the ceiling? You’d be surprised. “Part of the magic of reading a book is in the sharing that happens afterward, when you recommend it to a friend or you talk to someone about what you loved or hated about it,” said Amanda Boldenow, co-owner of the newly opened Spell Books in Littleton.