One common theme is the forbidden love. Vampires are often seen as dangerous and different, so their love with a human is something society or their own kind may not accept.
Another common theme is the struggle between good and evil within the vampire. Some fanfictions depict vampires as having a moral compass despite their need for blood. The human love interest may be the catalyst for the vampire to strive for a more 'good' existence, or the vampire may be torn between their love for the human and their dark vampiric instincts.
Love against all odds is a common theme. Since vampires and humans are so different, their love is often seen as something that goes against the natural order.
One common theme is the struggle between immortality and mortality. The vampire is immortal while the human has a limited lifespan, and this creates a lot of emotional turmoil. For example, in many stories, the vampire has to face the fact that their human love will age and die, or the human has to decide if they want to become a vampire to be with their love forever.
One common theme is forbidden love. Since vampires are often seen as dangerous and different from humans, their relationships are usually frowned upon in the fictional worlds, which adds a sense of drama.
Forbidden love is a common theme. Since vampires are often seen as dangerous and different, society in these stories usually frowns upon their relationships with humans. Another theme is sacrifice. The vampire may have to sacrifice their natural instincts, like the urge to drink blood, for the human they love. Also, the idea of immortality comes up. The human may have to face the fact that the vampire will live forever while they are mortal, which adds a layer of complexity to their relationship.
One common theme is the power imbalance. Vampires are generally stronger and have more abilities than humans. In a love story, this can create both attraction and tension. The human might be attracted to the vampire's power, but also feel intimidated. Also, redemption can be a theme. The vampire, who is often seen as an 'evil' creature, may find redemption through the love of a human. And the human may find a new purpose in trying to 'save' the vampire.
One common theme is the struggle between different natures. The vampire has a dark and often dangerous side due to their need for blood, while the human represents innocence and mortality. This contrast creates a lot of tension in the relationship.
Forbidden love is a common theme. Since vampires are often seen as dangerous or different, society in these stories usually disapproves of the relationship. Another theme is the struggle between life and death. Vampires are undead, and the human in the relationship represents life.
One common theme is the forbidden love. Vampires are often seen as dangerous and different from humans, so their relationship goes against the norms. Another theme is the struggle with immortality. The vampire is immortal while the human is not, which causes a lot of angst and conflict in the relationship.
In fanfiction, a frequent theme is the idea of redemption. The female vampire, through her love for the human, may seek redemption for all the bad things she has done in her long vampire life. Another common theme is the exploration of immortality. The human may be fascinated by the concept of living forever with the vampire, while the vampire may be envious of the human's ability to experience life in a more 'pure' way. And of course, there's the theme of forbidden love, as their relationship goes against the natural order of things in both the human and vampire societies.
One common theme is the exploration of power dynamics. Since Bella is a vampire and Edward is human, it changes the traditional power balance in their relationship. For example, Bella may have to protect Edward from other vampires.