Sure. If a fanfic has a flat plot, introducing a love story can add depth. For example, in a fanfic about superheroes that lacks excitement, a love triangle between the hero, the villain, and a civilian can create tension and make the story more interesting.
Well, consider a fanfic that's set in a post - apocalyptic world but seems empty because it only focuses on the survival aspects. If the writer introduces a love story between two survivors, it can change the whole tone. The love they have for each other can make them fight harder to survive, and their relationship can bring out different emotions. They might have secrets because of their love, or they could be torn between their love and the needs of the group. This new dynamic can save the fanfic from being dull and empty as it adds a whole new layer of emotional and plot - related elements.
One way is through character development. If the characters in a fanfic seem one - dimensional, love can be used to flesh them out. Let's say a fanfic is about a group of adventurers. By showing how they love and care for each other, their personalities become more complex. They might sacrifice for love, or their actions could be motivated by love, which gives the fanfic more substance. Also, love can be shown in different forms, like friendship love or unrequited love, which all add different flavors to the story.