Often, there's the theme of secrecy. Given the nature of their relationship in the context of the fanfiction, they have to keep it a secret from the other members of their coven. This adds an element of mystery and tension to the stories. Also, the theme of loyalty is explored, as they have to be loyal to each other despite the challenges they face.
One common theme is the exploration of their forbidden love. Since they have a father - son - like relationship in the original series, the fanfiction often delves into how they overcome this social and moral boundary. Another theme is the power dynamic, as Carlisle is older and more experienced in the vampire world compared to Edward.
Another theme is the struggle with their vampiric nature in the context of their relationship. How their immortality and unique vampire qualities affect how they interact and love each other. For example, some fanfictions explore how they deal with the concept of time and change over the centuries.
The theme of sacrifice also appears frequently. Edward might sacrifice his own desires or safety for Carlisle, and vice versa. In some fanfictions, this is shown through them protecting each other from other powerful vampires or from the human world's threats. It's really interesting to see how these themes play out in different fan - created stories.
Typically, Edward Carlisle slash fanfiction often focuses on the relationship between Edward and Carlisle. It may explore themes like loyalty, family - like bonds in a different context, and the power dynamics between them.
One common theme is the exploration of family dynamics. Since Carlisle is sort of the father figure in the Cullen family, fanfictions often look at how he accepts or influences Bella's relationship with Edward within the family structure.
One common theme is loyalty. Carlisle and Edward have a strong loyalty to each other and to their family. In many fanfictions, this loyalty is tested, for example, when faced with threats from other vampires or when making difficult decisions that could affect the family. Another theme is the struggle with their vampire nature. Carlisle, being more in control, often tries to guide Edward through his own internal battles.
The theme of self - discovery is quite prevalent too. Bella is often portrayed as a character who is on a journey of self - discovery, especially when caught between Carlisle and Edward. This includes understanding her own feelings, her place in the vampire - human world, and her future with either of them.
Another theme is the power dynamics. Edward and Jasper both have their own unique powers, and fanfictions often play with how these powers interact in the context of their relationship. For example, how Edward's mind - reading ability might affect their intimacy or how Jasper's ability to control emotions could influence their arguments.
Another theme is the discovery of their true feelings for each other. It often involves a journey of self - realization where both Edward and Jacob come to terms with their love that they might have initially suppressed. For example, in some fanfictions, they start as rivals but gradually realize their deeper emotions.
The theme of self - discovery through their relationship is also popular. As they interact with each other in ways not shown in the original story, they learn more about themselves, their feelings, and their identities. For example, Edward might discover a different side of his personality when he is with Jacob, and vice versa.
One common theme is the exploration of forbidden love. Since the relationship between these characters is rather complex in the original Twilight series, fanfiction often plays with the idea of love that goes against the norms set in the original story.