One common theme is the struggle between immortality and mortality. In these novels, vampires are often centuries - old, and they interact with mortal humans. This creates a tension as the mortal characters age while the vampires remain unchanged. For example, in 'Interview with the Vampire', Louis is constantly grappling with his eternal existence compared to the brief lives of those he loves.
Another theme is the exploration of the dark side of human nature. Vampires are often seen as the manifestation of our baser desires. In historical vampire romance novels, they may tempt mortal characters into exploring their own dark sides. For instance, in some novels, a human character might be lured by a vampire into a world of excess and violence, but also find a strange kind of love within that dark world.
One common theme is the eternal love. Since vampires are immortal, their love can span centuries. Another is the struggle between good and evil within the vampire character. They often have a dark side due to their nature but can also show great love and compassion. And secrecy is also a big theme. Vampires usually have to hide their true nature from the human world.
There's the theme of transformation. The vampire heroine may transform the hunter's view of vampires, and the hunter may transform the vampire's view of humans. Another is the theme of loyalty. The vampire may have loyalty to her vampire clan which conflicts with her love for the hunter, and the hunter may have loyalty to their hunting group. Mystery is also a key theme. There are often secrets about the vampires' origins or the hunters' true motives that add to the allure of the romance in these novels.
One common theme is the forbidden love. Since vampires are often seen as different and dangerous in these novels, the love between them and humans is considered taboo. For example, in 'Twilight', Edward is constantly worried about Bella's safety because of his vampire nature.
Forbidden love is also a major theme. In vampire slave romance novels, the relationship between a vampire and a slave is usually frowned upon in their fictional societies. So the lovers have to overcome social and cultural barriers, which adds to the allure of the story. The vampires often have their own rules and taboos regarding relationships with slaves, and the human slaves may have their own fears and reservations about getting involved with a powerful vampire.
One common theme is the forbidden love. Since vampires are often seen as different or dangerous, their relationships with humans are usually forbidden in some way. This adds an element of excitement and tension.
Love against all odds is a common theme. Since werewolves and vampires are often enemies in their fictional worlds, their relationships go against the norms of their species. Another theme is the struggle for identity. Characters may have to choose between their nature as a werewolf or vampire and their love for someone from the other species.
Another theme is the allure of the unknown. The vampire, with their immortality, powers, and different way of life, represents the unknown to the human or other - race character. This creates a sense of mystery and attraction that drives the romance. For instance, in 'A Discovery of Witches', the witch is initially intrigued by the vampire's world.
Forbidden love is also very common. Since the vampire king is in a position of power, his love interest may be from a different social class or species, like a human or a lower - ranked vampire. This creates a lot of tension and drama in the story. For instance, in many novels, there are rules against such relationships in the vampire world.
A sense of adventure is often present. The hobo may be traveling from place to place, and the vampire brings an element of danger and mystery. Together, they embark on various adventures, whether it's running from vampire hunters or exploring the vampire's hidden lairs. This theme of adventure keeps the story exciting and the relationship evolving.
Mortality and immortality is another common theme. Vampires are immortal while werewolves have a more normal lifespan (in most cases). This creates a contrast and conflict in the relationship. The vampire may have to watch their werewolf lover age and die, or the werewolf may struggle with the vampire's eternal nature. Additionally, themes of loyalty - to their own kind and to their lovers - are often explored in these novels.