One common theme is the exploration of a forbidden or unexpected love. Since they were previously seen as family within the Cullen coven, their new relationship as mates goes against the normal perception. Another theme is the discovery of self - identity. As they become mates, they might question who they are within the family and the vampire world anew. For example, Esme might wonder how her role as Carlisle's wife was different from her new role as Edward's mate.
Family acceptance is also a big theme. The other Cullens' reactions to their relationship can vary greatly in these fanfictions. Some might be happy for them, while others could be worried about the implications. And there's often a theme of sacrifice. They may have to sacrifice some of their previous relationships or ways of life to be together as mates. For instance, they might have to change how they interact with the rest of the family to make their relationship work.
A common theme is the power of the mate bond. In these fanfictions, the bond between Edward and Esme is often portrayed as something extremely strong. It can make them do things they wouldn't normally do. For example, they might risk their safety to protect each other. Also, the theme of growth and change is present. Their relationship causes them to grow as individuals, learning new things about themselves and each other, and evolving their personalities as they adapt to being mates.
One common theme could be family dynamics. Since Edward and Esme have a relationship within the context of a family - like in some stories, exploring how their bond affects the family unit might be a theme.
One interesting 'Edward and Esme are mates' fanfiction could be where they discover their bond in a very unexpected way. Maybe they are both on a mission to protect the Cullen family from a new and powerful threat. During this time, they start to realize that their connection is deeper than just being family members in the coven. They begin to communicate on a whole new level, sharing thoughts and feelings that they never thought possible before.
Identity is a common theme in such fanfictions. Both Edward and Harry have their own identities within their respective worlds, and when they become mates, they have to re - evaluate and sometimes re - define who they are. There's also the theme of acceptance. Their relationship may not be accepted by everyone in their communities, so they have to fight for acceptance while also dealing with their new - found bond as mates. This creates a lot of drama and interesting plotlines in the fanfictions.
One common theme is the idea of overcoming differences. Since Edward is a vampire and Jacob is a werewolf, their different natures create a lot of tension which they have to overcome in most fanfictions. Another theme is the power of love and how it can bridge the gap between two very different beings. Also, the concept of loyalty often comes up as they have to be loyal to each other and their new relationship in the face of opposition from their respective groups.
Love and devotion are very common themes. Since they are mates, their deep love for each other is often explored. Another theme is the struggle between their different natures, with Edward being a vampire and Bella being human. Protection also comes up a lot, as Edward is always eager to protect Bella.
One common theme is the exploration of their eternal bond. Since they are vampire mates, their connection is supposed to last forever, and many fanfictions focus on how they maintain and strengthen this bond. Another theme is the challenges they face due to their different natures. Bella was once human, and becoming a vampire brings a whole new set of issues. Also, the theme of protecting each other and their family is quite common. They are mates, so they will do anything to keep each other safe.
One popular 'Harry and Edward are mates' fanfiction could be 'The Unlikely Bond'. It explores how their different magical worlds collide and how they form a deep friendship. They might face challenges together like dealing with the dark forces in both the wizarding world and the vampire realm.
One common theme is the exploration of a deep emotional connection. Since they are soul mates, the fanfictions often show a strong bond between them that goes beyond physical attraction.
A major theme is the power dynamic. Sasuke's vampire powers can both protect and endanger Naruto, which creates a complex power play in their relationship. Also, redemption is a theme sometimes. Sasuke might be trying to atone for his vampiric nature's darker aspects through his relationship with Naruto. This can add a lot of depth to the story.
One common theme is the exploration of different types of love. There's often a mix of romantic love, friendship - like love, and loyalty among the characters in the harem. Another theme is the growth of Edward as a character as he deals with multiple relationships.