The theme of self - discovery through their relationship is also common. As Bella adjusts to the vampire world and Rosalie comes to terms with her own past and identity, their interactions can play a role in their personal growth. They can learn from each other's experiences and values, which makes for a really engaging and complex fanfiction story.
One popular theme is friendship development. Writers often explore how Rosalie and Bella can overcome their initial differences and become friends. Another theme could be their shared experiences in the Cullen family, like dealing with family traditions or protecting the family from outside threats.
There are several common themes. Protection is one. In some fanfictions, Rosalie and Bella end up protecting each other from various threats, whether it's from other vampires or some external danger. Another theme is female empowerment. Their relationship can be a vehicle for showing strong female characters working together. In many fics, they are not just side characters but take on active roles in solving problems and facing challenges, which is really inspiring.
Another idea for a fanfiction could be that Bella and Rosalie are part of a prophecy. They have to fulfill certain tasks to save their community. Along the way, they learn more about their own powers and the bond between them deepens as they face numerous challenges.
One popular trope is the 'unlikely friendship' between them. Given their initial animosity in the original series, seeing them become friends in fanfiction is quite appealing. For example, in many stories, they start to understand each other's struggles.
Edward Cullen is often a popular character in these fanfictions. Since he has a close relationship with Bella in the original story, his role can be further explored in relation to Rosalie and Bella's relationship. Another one could be Alice Cullen. Her ability to see the future can add an interesting dynamic, especially when it comes to predicting things that might affect Rosalie and Bella's friendship or any adventures they might go on.
One common theme is the exploration of a non - traditional relationship. Since it goes against the normal pairings in the Twilight series, it often delves into how society within the story (the vampire and human world) reacts to it. Another theme is self - discovery for both Bella and Rosalie. As their relationship forms, they learn more about themselves and their place in the world around them.
Protection is a common theme. Rosalie's possessiveness often translates into her protecting Bella from various threats in the Twilight world, whether it be other vampires or the general dangers of their supernatural existence.
One common theme is the exploration of their relationship. It could be a romantic relationship, showing how they interact and fall in love. Another theme might be adventure, where they go on some sort of journey together, facing challenges and growing closer through it.
One common theme is friendship. Their different personalities come together to form a unique bond that is often explored in these fanfictions.
Another theme is the struggle against societal norms or expectations. In these fanfictions, Bella and Rosalie might have to deal with how others in their world view their relationship. For example, their families or friends might not understand or accept it at first. This creates a lot of drama and conflict in the stories. Also, themes of self - discovery are quite prevalent. As they fall in love, they learn more about themselves and what they truly want in a relationship.