One common theme is the exploration of a forbidden relationship. Since Carlisle is much older and in a different position in the vampire hierarchy compared to Bella, it creates an interesting dynamic. Another theme is the idea of mentorship. Carlisle often acts as a mentor figure to Bella, guiding her through the vampire world.
Love that defies the odds is a very prevalent theme. Their relationship goes against the norms of both the human and vampire worlds. This theme allows for a lot of creative storytelling as the authors find ways to make their relationship seem plausible and engaging. It also often involves themes of self - discovery as both characters learn more about themselves through their relationship.
The theme of sacrifice also pops up a lot. Whether it's Carlisle sacrificing his own beliefs or Bella sacrificing her human life, it adds a lot of drama to the stories. There's also the theme of discovery. Bella is constantly discovering new things about Carlisle and the vampire world, which makes for exciting plotlines.
The theme of protection also often comes up. Carlisle, being the ethical and caring vampire he is, may feel a strong sense of protecting Bella from various threats in the vampire world. Additionally, there can be a theme of self - discovery for Bella. Through her interactions with Carlisle, she might learn more about herself, her values, and her place in this strange new world she's been thrust into.
One common theme is the exploration of an unusual relationship. Given their different natures (human and vampire), fanfictions often delve into how they can bridge that gap. Another theme is the idea of mentorship. Carlisle, being an old and wise vampire, can be seen as a mentor to Bella in some stories. And of course, there's the theme of forbidden love. Their relationship is not the typical one in the Twilight universe, so it often gets portrayed as something that goes against the norms.
The theme of sacrifice often appears. Carlisle may have to sacrifice his principles or his position in the vampire community for Bella. And Bella might sacrifice her normal human life for Carlisle. Also, the theme of self - discovery is common. As Bella gets involved with Carlisle, she discovers new aspects of herself, like her ability to adapt to the vampire world. And Carlisle discovers new emotions and a different way of loving through his relationship with Bella.
One great fanfiction could be 'The Unforeseen Bond'. It delves into a different kind of relationship between Bella and Carlisle, where they form an unexpected friendship that has a profound impact on the Cullen family dynamics. Another one might be 'A New Perspective' which shows Bella's view of Carlisle as a mentor figure rather than just Edward's father. And then there's 'Carlisle's Concerns', which focuses on Carlisle's internal thoughts regarding Bella's presence in their vampire world.
One interesting fanfiction could be about Bella having special powers that Carlisle discovers and they go on a journey to understand them. It might involve them traveling to different vampire covens to seek knowledge.
Fanfiction.net is a really popular platform for 'bella swan and carlisle cullen fanfic'. It has a large collection of stories, ranging from different genres and writing styles. You can easily search for specific tags related to bella and carlisle to find the fanfics you're interested in.
Another fanfic could be 'The Unforeseen Alliance'. In this, bella and carlisle find themselves in a situation where they have to team up against a common enemy. It's full of action and also shows the growth of their relationship as they learn to trust each other more.
A common theme is the idea of alternative relationships. Fanfic writers like to imagine what could have been if Bella had a closer connection with Emmett instead of Edward. This includes exploring different romantic or platonic relationships. Another theme is growth. Both Bella and Emmett can experience personal growth through their interactions in fanfiction, whether it's Bella becoming more fearless or Emmett becoming more empathetic.
One common theme is the exploration of their relationship in different settings or situations. For example, in some fanfictions, they are in a post - apocalyptic world together. Another theme is the expansion of their characters' backstories. Writers often give more details about Bella's family history or Edward's experiences before meeting Bella.
You can start by looking on Fanfiction.net. It has a large collection of Twilight - related fanfictions, including many that focus on Bella and Carlisle. Archive of Our Own (AO3) is also a great place. It has a wide variety of fan - created works, and you can easily search for specific pairings like Bella Swan and Carlisle Cullen.