The main hero, Shy, was best buds with the leader of a motorcycle gang. The gang leader's daughter apparently is lusting after Shy, and goes out of her way to dress and act sleazy and easy. In his infinite wisdom, Shy decides he must "cure" the girl of her ways, and treats her like the skank-ho that she is acting like. No surprise, it's a major turn off. She rapidly goes back to studying to be a nurse or something respectable, and Shy resumes his usual loose lifestyle. And I quickly left this book on a pile at home to eventually be donated. 
 My only regret is that I didn't throw it away, because later my dad tried to read it and was so horrified by the writing quality that he told my sister, but not me. So for months, they were thinking that I actually liked it...