This question involved many different factors and situations, and it was impossible to simply give a universal answer. However, some of the reasons why boys might not like their girlfriends reading romance novels might include: 1. Personal preferences: Boys may not like their girlfriends to read romance novels because of their personal preferences. They might prefer other types of novels such as science fiction, history, suspense, and so on. 2. Emotional needs: Boys may think that reading romance novels will lower their emotional needs because they desire more emotional communication and intimate interaction. If his girlfriend read romance novels, it might affect their relationship. 3. Worry that his girlfriend will be affected: A guy may worry that his girlfriend will be affected by a romance novel and become emotionally fragile or overly dependent on the plot of the novel. They thought it would affect their relationship and their girlfriend's mental health. 4. Unable to understand the content of the novel: Some boys may not be able to understand the plot or emotions of the novel. This may make them feel that their girlfriend may ignore their emotional needs or values when reading romance novels. Every boy had different preferences and needs, and reading romance novels was not necessarily a bad thing. If your boyfriend doesn't like his girlfriend reading romance novels, you can try reading other types of novels with them or share your favorite novels and plots with them. The most important thing was to maintain communication and understanding to ensure that each other's needs and preferences were respected and met.