A major theme is trust. Bella has to learn to trust Jasper completely, and Jasper has to earn that trust. This theme is explored through various plot points like when they face threats together or when Jasper has to make decisions for Bella's safety. Also, the theme of power and control is there as Jasper has to use his powers to protect Bella and teach her to control her own emotions.
One common theme is protection. Jasper is often portrayed as a protector of Bella, which is different from the traditional Edward - Bella dynamic in the original story. Another theme is growth. Bella is shown to grow and develop under Jasper's influence, whether it's in terms of her confidence or her understanding of the vampire world.
Another theme is the power dynamic. Jasper has his special abilities and Bella has her own charm. Fanfictions may play with how these two aspects interact and influence each other. For example, in some stories, Bella's humanity affects Jasper's view on his vampiric nature.
A prevalent theme in jasper and bella fanfiction is the struggle against the odds. They come from different backgrounds and have different natures within the Twilight universe. Fanfictions often focus on how they overcome these differences. Also, themes of loyalty and sacrifice are common. They might be in situations where they have to be loyal to each other and make sacrifices for their relationship or for the greater good of their vampire - human world.
The theme of self - discovery is also prevalent. Bella may discover new aspects of herself through her relationship with Jasper, and Jasper might also learn more about his own humanity or lack thereof. This mutual exploration adds depth to the stories and makes them more than just a simple romance.
One common theme is the struggle against their different natures. Jasper has his violent past as a vampire, while Bella is a human. Fanfictions often explore how they deal with this difference.
One common theme is the exploration of their forbidden love. Since Jasper is a vampire and Bella is a human in the Twilight universe, there's often a sense of danger and secrecy in their relationship in the fanfiction. Another theme could be the struggle against their own natures. Jasper has his vampire instincts and Bella her human vulnerabilities.
One common theme is the struggle between Jasper's vampire nature and his growing love for Bella. His instincts as a vampire often conflict with his feelings, creating an interesting internal battle.
One common theme is friendship. Despite the complex nature of their relationships in the original Twilight series, fanfictions often explore how they can form strong friendships. Another theme is protection. Given that Bella is often in need of protection, Carlisle and Jasper are usually depicted as being key in keeping her safe.
Romance is a very common theme. Writers often explore the relationships between these characters in a romantic context. Another common theme is adventure, where they might go on quests or face challenges together.
One common theme is friendship. They often have to learn to trust and rely on each other.
Another theme is the impact on the Cullen family dynamic. Their relationship, if they are related, can change the power balance and the way the family functions. It can also cause tensions or bring new understandings among the family members.