Stephenie Meyer’s Twilight series currently hold three of the top ten slots on Amazon’s best sellers list. Her Young Adult novels about a love story between a human girl (Bella) and her vampire boyfriend (Edward) are popular with far more than just young adults. And “popular” is quite the understatement. A friend who does ladies’ nails told me that one of her sixty-something clients confessed, “Don’t tell my husband, but I’m in love with Edward.” She also told me that when she invited one of her friends to go out to a movie, she was rebuffed with, “Oh, sorry, but I’m going to stay in with Edward tonight.” “Popular” doesn’t…