Love and acceptance are also prevalent themes. Bella has to be accepted into the family by Carlisle and Esme, and in turn, she has to learn to love them as her new family members. There's also the theme of sacrifice. In some fanfics, either Carlisle, Esme or Bella may have to sacrifice something for the well - being of the family.
A theme that often shows up is the struggle between the human and vampire sides, especially with Bella. Carlisle and Esme, being more experienced vampires, can offer guidance. This creates a lot of internal and external conflict in the fanfics, as Bella tries to find her place within this new family while also dealing with her own human - turned - vampire identity.
One common theme is family. Since Carlisle and Esme are like Bella's adoptive parents in the vampire family, many fanfics explore how they build a family unit. Another theme is protection. Carlisle as the patriarch and Esme as the matriarch often have to protect Bella from various threats in the vampire world.
One common theme is the exploration of complex relationships. Since Bella, Esme, and Carlisle have different personalities and roles, fanfics often dig into how they interact and relate to each other on a deeper level.
One common theme is family. Since they are all part of the Cullen family in the Twilight universe, many fanfictions explore how they interact as a family unit. For example, how Carlisle and Esme act as parental figures to Bella.
The theme of loyalty is quite common. They are extremely loyal to each other and to their family. Fanfics often explore how this loyalty plays out in different situations. Additionally, the theme of acceptance is there. They accept each other's flaws and pasts, which is a big part of their relationship. This acceptance is often explored in great detail in fanfics, showing how it strengthens their bond.
Love is a very common theme. Their love for each other drives their need to protect. For example, in many fics, Carlisle would do anything to keep Esme from harm because he loves her so deeply.
Love is a very common theme. Their deep and abiding love for each other is often explored. It shows how their love is different from normal human love, given their special circumstances.
One common theme is the struggle between their different natures. Carlisle being a vampire for a long time and Esme being a newly turned vampire. Their different experiences with vampirism can create some interesting dynamics in the fanfic.
The vampire lore within the fanfic is also a key element. Since Carlisle and Esme are vampires, how their vampiric nature affects their relationship with Bella, like their self - control around her human blood, is often explored. And also, the way Bella adapts to this world of vampires which they are a part of.
One common theme is their eternal love. Since they are vampires, their love is often depicted as something that will last forever, defying time.
Carlisle is usually depicted as having a strong sense of duty. He tries to uphold certain values even in the vampire world. Esme is characterized by her loyalty to Carlisle and their family. In some fanfics, her past experiences are explored to show how they have shaped her into the loving and strong character she is in relation to Carlisle. Their relationship is often shown as a stable and loving one, where they support each other through various challenges in the vampire society.
One common theme is the exploration of their relationship in different universes. For example, in some fanfics, they might be in a world where the vampire - human rules are different.