It would likely shock and confuse many characters. For example, Edward would be very surprised and perhaps a bit jealous as he had a strong relationship with Bella. The Cullens as a family might be divided in their opinions. Some, like Esme, might be more accepting and try to understand, while others could be more hesitant. The werewolves would also be affected. They might see this as another strange and unpredictable aspect of the vampire world and it could potentially change their relationship with the Cullens. Jacob, in particular, would probably be very confused about Bella's new situation.
Well, the relationship would have a huge impact on other characters. The Volturi would surely be interested. Aro might see it as a threat to the vampire order he tries to maintain. As for the other vampires in the Twilight world, they would either be intrigued or appalled. The humans around Bella, like her father Charlie, would be completely in the dark and if they ever found out, it would be a major shock. Her friends would also be affected. Angela and Jessica might not be able to understand such a complex relationship. And within the Cullen family, Rosalie might be one of the most resistant to this new relationship as she has her own ideas about relationships and propriety.
In Bella Carlisle Jasper mates fanfiction, Bella might be depicted as more assertive in her relationships. Instead of the somewhat indecisive Bella in the original series, she could be the one driving the relationship forward. Carlisle may be shown with a more conflicted side. His normally calm and collected nature could be shaken by his feelings for Bella, and his relationship with Jasper might become more strained. Jasper, on the other hand, could be more vulnerable. His past traumas may resurface as he competes for Bella's love, and he may show a side of himself that was hidden in the original story.
The other characters might be intimidated by Jasper and thus treat Bella with a certain level of caution. For example, if they are part of a group, the group members might be more careful around Bella because they don't want to anger Jasper. Or, if there are enemies, they might try to use Bella to get to Jasper. On the other hand, some characters might see Bella as a way to get closer to Jasper and be overly friendly to her for that reason.
One interesting plotline is the idea of Bella having to choose between Jasper and Carlisle based on more than just love. It could be about choosing a future for herself in the vampire world. For instance, Carlisle might offer a more stable and 'ethical' vampire life, while Jasper could represent a more passionate and unpredictable option.
One popular aspect in Jasper, Carlisle and Bella mates fanfiction is the exploration of complex relationships. In some stories, Jasper's past experiences as a vampire in the Confederate Army add depth. For example, his struggle with his bloodlust and how that might interact with his relationship with Bella. Carlisle, being the moral compass in many of these stories, often has to mediate between the two. Fanfiction might also explore how Bella's choice between them (if it's a love triangle situation) could impact the Cullen family dynamic as a whole.
In some fanfictions, if Bella and Jasper were mates, there would be a huge shift in the Cullen family dynamics. Jasper's ability to sense and manipulate emotions could either soothe Bella's constant emotional turmoil in a more direct way compared to Edward. It might also create jealousy and tension within the family, especially from Edward who was originally Bella's love interest. This new pairing could lead to different plotlines involving protecting Bella from vampire threats, with Jasper's combat skills and strategic thinking coming into play more prominently.
If Bella is related to Katherine, it would surely shock Edward. He has a complex relationship with Bella already, and now having her related to Katherine, a rather devious vampire, would make him extremely protective and also a bit suspicious. He might worry that some of Katherine's traits could surface in Bella over time.
Well, in many Bella Carlisle Jasper mates fanfictions, a common plot point is the complex relationship dynamics. Since Carlisle is Jasper's sire in the Twilight lore, adding Bella into the mix creates a love triangle of sorts. Often, there are themes of forbidden love as the relationships go against the traditional vampire hierarchy and norms within their coven. Another key plot point can be the struggle for Bella's affection between Carlisle and Jasper, which leads to various conflicts and power struggles within the coven.
Well, clearly Jasper and Bella are the main characters. Jasper, with his complex past and unique abilities as a vampire. Bella, who is often portrayed as a strong - willed human - turned - vampire in these fanfictions.
The sister could have a big impact. Suppose she has a gift of reading minds like Edward. She might be able to tell if Edward has any hidden motives towards Bella. If she senses something wrong, she'll surely try to break them up. But if she approves of Edward, she could actually be a great confidante for both of them, and help them communicate better when they have misunderstandings.
One great 'Twilight Jasper and Bella mates' fanfiction is 'Jasper's Redemption'. It delves deep into how Jasper and Bella's relationship could develop, exploring their unique bond. Another is 'Bella and Jasper: A Different Path' which takes a different turn from the original story, showing how they might interact in a more complex world. There's also 'Jasper's Love for Bella' which focuses on the emotional aspects of their potential relationship.