Romance is a very common theme. Writers of fanfic often expand on the romantic relationships from the show. They might write about different 'what if' scenarios in Belly and Conrad's relationship, like what if they had gotten together earlier. Growth and self - discovery is another theme. Belly is growing up in the story, and fanfics can show more of her internal journey of self - discovery, away from just the romantic and family aspects. Also, the theme of summer memories is prevalent. Since the story is set in summer, fanfics can create new and unique summer memories for the characters, adding more depth to their experiences.
A popular theme is the exploration of unrequited love. There could be scenarios where a character has feelings for another that are not reciprocated, which adds drama. Another is the theme of jealousy. Given the complex relationships in the show, fanfics can delve deeper into how jealousy affects the characters. For instance, when Belly is around other girls who like Conrad. And finally, the theme of healing. After any conflicts or heartbreaks in the story, fanfics can show how the characters heal and move forward, whether it's through new relationships or finding themselves.