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.
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 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.
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.
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.
Carlisle is often portrayed as a kind - hearted and highly skilled doctor in the fanfic. He has a strong sense of duty towards his patients.
The 'eternal bond' theme would be very suitable for their wedding. It emphasizes the fact that their relationship as vampires is eternal. Decorations could include gold chains or ribbons to represent the unbreakable bond. Additionally, a 'forbidden love' theme could add an interesting twist, as their love in the vampire world might have had some initial challenges or taboos. This could be shown through elements like locked - heart motifs or red roses (symbolizing passion but also the difficulties they overcame).
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.