Fanlore: A novel about two young American girl twins who are BNFs in a fictional Simon Snow series fandom. In the course of the book, they start college with one twin trying to grow away from fandom and the other afraid to let go after Simon Snow got her through some rough times. Cath, the protagonist, eventually learns to appreciate life away from the laptop and finds a boyfriend who appreciates her fannish leanings.
Source · ISFDB CC BY 4.0