(CNN) -- They don't call it "Twi Crack" for nothing. Lisa Hansen, for example, thought she had lost her mind the first time she read "Twilight." Partly because she's 36. "I was absolutely worried that something was wrong with me," the Utah mother of two said. "I just couldn't put it down -- I was obsessed completely." She picked up the first of Stephenie Meyer's vampire novels -- recommended by a teen neighbor -- with few expectations. After devouring it, she couldn't get the images of doomed love between a vegetarian vampire, Edward, and an awkward teenage girl, Bella, off her mind. Hansen thought about the books so much she seriously wondered if she was experiencing some sort of midlife crisis.
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Adult female fans of the "Twilight" series are just as in love with it as teen girls
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They often take it a step further, spicing up Stephenie Meyer's chaste sex scenes
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They created communities where they can express their "Twilight" love without judgment
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Their "coming out" reflects a societal push toward older women embracing sexuality
That hasn't stopped the fans from creating their own sex scenes in copious amounts of fan fiction, some of which have themes like "@placeholder and Bella do steamy office affair," or "Edward and Bella try out S&M."