Some authors travel up or down their characters' timelines, to write the stories of a hero or heroine's parents or children. This happens most frequently in historical romance, although it does happen in paranormal romance as well.
(Julia Quinn addresses some of the issues that might befall a potential reader when reading this type of story as she explains why she won't write a Violet and Edmund Bridgerton romance).
Do you like reading prior or the next generation love stories? Or are you too distracted by what you know of the couple you first read about?