It could be for the greater good of the village. There might be a prophecy or some sort of political situation where Sakura's pretend love for Naruto is seen as a way to strengthen the village. For example, their union (even if it's fake) could be a symbol of unity that would boost the morale of the villagers and make other villages see them as more stable and powerful. Also, Sakura might be pressured by the elders or some authority figures in the village to do this in order to maintain a certain image or alliance.
Maybe she wants to experience the story from a male perspective. In fanfiction, different genders often have different roles and experiences. By pretending to be male, Sakura can explore how male characters are written, how they interact with others, and what kind of emotions and challenges they face.
Well, in the fanfiction context, Naruto may not love Sakura because he has unrequited feelings for someone else. Maybe he has a deep connection with another character that makes him view Sakura just as a teammate. Also, their personalities might not be as compatible in a romantic sense as one would initially think. Naruto is often impulsive and headstrong, while Sakura can be a bit more reserved in some ways, and this could lead to a lack of romantic attraction.
One possible reason could be that she might have underestimated Naruto in the past. She often belittled his abilities and dreams, but as she grew and realized his true strength and determination, she felt the need to apologize for her previous behavior.
One possible reason could be Sakura's constant pining for Sasuke. Naruto might feel frustrated that she's so focused on Sasuke when he's right there for her. In the Naruto universe, Naruto has always been a bit jealous of Sakura's love for Sasuke, and in fanfiction, this could be amplified to the point where he yells at her out of pent - up emotions.
One reason could be Naruto's recklessness. In fanfiction, Naruto might do something extremely dangerous without thinking, and Sakura, being worried about his safety, yells at him. For example, if he decides to take on a powerful enemy alone without a proper plan.
Maybe Naruto is sick of Sakura in fanfiction because her character is often portrayed as too pushy or one - dimensional. In some fanfictions, Sakura might be overly obsessed with Sasuke and Naruto just gets tired of her constantly going on about it.
One reason could be miscommunication. Maybe Sakura said something that Naruto misinterpreted as an insult to his dreams or abilities. For example, if she made a comment about his progress as a ninja in a way that came off as dismissive.
It could also be that the fanfiction provides a form of escapism for her. The Naruto world is full of action and adventure, but the fanfiction can take it to another level. She might enjoy reading about alternate versions of events or getting a deeper look into the emotional lives of the characters. In some fanfictions, there could be more focus on her own personal growth and self - discovery, which might be appealing to her.
One possible reason could be that Naruto realizes their goals and values are too different. Naruto is highly focused on protecting the village and achieving peace on a large scale, while Sakura might be more concerned with her medical career and the well - being of a smaller circle. Another reason could be the presence of Hinata. Naruto might gradually develop deeper feelings for Hinata which could lead to the break - up with Sakura.
Well, one reason could be Sakura's constant nagging about Sasuke. Naruto has his own feelings and goals, and if Sakura is always pushing the Sasuke matter in a way that dismisses Naruto's feelings, it might make him snap. For example, if she keeps asking him to bring Sasuke back without considering how hard it is for Naruto.