Well, in some fanfics, it could be due to jealousy. There might be other vampires or humans getting too close to either Edward or Bella, causing trust issues between them. Also, the difference in their long - term goals. Edward, being immortal, may have different plans for the future compared to Bella, a mortal at first. This disparity could drive them apart.
One possible reason could be Edward's fear for Bella's safety. In the Twilight universe, Bella is constantly in danger because of her relationship with Edward. This overbearing worry might lead to arguments and ultimately a break - up. Another reason could be Bella's desire for a more normal life. Edward's vampire world is full of secrecy and danger, and she might feel exhausted from it.
In certain fanfictions, the break - up might occur because of a misunderstanding. Maybe Bella misinterprets Edward's actions or words, thinking he doesn't truly love her. Or perhaps Edward misunderstands Bella's intentions regarding her transformation into a vampire. These misunderstandings can snowball and cause a rift between them large enough to lead to a break - up.
One possible reason could be Bella's discovery of a dark secret in Edward's past that she can't overlook. For example, if she found out he had been involved in something unethical long ago. Another reason might be differences in their future plans. Maybe Bella wants to live a normal human life for a while longer, while Edward is eager to turn her into a vampire immediately. Also, external pressure from other vampire clans could force them apart, as they might not approve of their relationship and create situations that drive a wedge between them.
One reason could be that some fans want to explore different character dynamics. The original Bella - Edward relationship is so well - known and often idealized, so making Bella hate Edward creates a whole new set of tensions and story possibilities.
Often, Bella might become more independent. She could focus on her own growth, like furthering her education or making new human friends. This is a chance for her to explore a life without Edward.
Well, in Twilight fanfic, the idea of 'Rosalie Seduces Bella' might stem from the desire to break the traditional relationship molds. The original series has its set relationships, and fanfic writers may want to introduce a more complex and unexpected relationship. Also, Rosalie has her own charm and allure, and some writers may think that it would be interesting to see how Bella would react to that kind of approach from Rosalie. It could also be a way to add more drama and conflict to the story, which is often what makes fanfic engaging.
One possible reason could be differences in their long - term goals. Maybe one of them wants to pursue a more peaceful life while the other is bent on seeking power. Another reason might be external pressures, like the disapproval of their respective clans or kingdoms in the fanfic's fictional setting.
In some fanfics, their different social ambitions might drive them apart. Chuck is focused on business and power in his own way, while Blair has her own dreams of high - society success. If their paths start to diverge too much in terms of what they want out of life, it can cause a break - up. For example, if Blair wants to be more involved in charity work and Chuck doesn't support her fully, it can create a rift.
It could be a form of creative but very extreme deviation. Maybe the author was trying to explore gender - bending concepts in a really radical way, but this is a very extreme take on it. However, it's still not in line with the general spirit of the 'Twilight' series. In a more general sense, some fans might just be experimenting with ideas without fully considering the implications or the respect for the original work.
Perhaps she has her own vision of their relationship and doesn't want it to be influenced by the often - strange and varying ideas in fanfiction. Fanfiction can be full of outlandish concepts that she doesn't want to be part of. She wants to preserve the unique and special nature of her relationship with Edward as it is in real life.
One reason could be a shift in the story's setting. If the fanfiction is set in a different time or place, Bella's values and interests might change, leading her to not like Edward. For instance, if it's a modern - day setting with different social norms, she may find Edward's old - fashioned ways off - putting.
One reason could be loyalty. Emmett is part of the Cullen family, and Bella is important to Edward, who is also his family. So, he would do anything to protect her for the sake of family unity. Another reason might be his sense of justice. If he saw Bella in an unfair or life - threatening situation, his nature would drive him to save her.