They might start by sharing their favorite BTS songs and music videos. The vampire could use his enhanced senses to experience the music in a unique way, which the girl would find fascinating.
One interesting aspect could be how their relationship dynamics change. In the original, Edward was the vampire and Bella was the human, so reversing their roles might lead to a different power dynamic. For example, Bella as a vampire would have more physical strength and speed, which could make her more protective of Edward. Also, Edward as a human might struggle with his mortality compared to Bella's immortality, creating new tensions and storylines in the fanfiction.
One great fanfiction could be about how Blaine, as a vampire, tries to protect Kurt, a human. Maybe Blaine has to hide his true nature from Kurt at first. For example, he might avoid being out in the sun when they are together. There could also be a story where Kurt discovers Blaine's secret on his own and has to decide whether he can accept Blaine for who he really is.
One possible fanfiction could be about Bella adjusting to her new vampire life while Alice, as a human, has to deal with the knowledge of the supernatural world in a different way. Maybe Bella tries to protect Alice from other vampires who might see her as a target because of her connection to Bella.
In some fanfictions, the human character might be a vampire hunter who falls in love with a vampire they were supposed to kill. This creates a really unique and conflict - ridden plot. The authors often delve deep into the moral dilemmas of such a relationship, making it a fascinating read for those who love this genre.
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.
One popular vampire and human love story in fanfiction is the story where the vampire, despite his dark nature, falls deeply in love with a human. He tries to protect her from the dangers of his world while she helps him rediscover his humanity. The relationship is filled with passion and a struggle to be together against all odds.
You could focus on the vampire - human friendship. For example, a vampire could help a human solve a mystery in their town. Or they could be in a mentor - mentee relationship, where the vampire imparts their long - lived wisdom to the human.
Another good one is 'The Vampire's Mate'. It delves deeper into the vampire lore and how Bella, as a human, fits into their world. The relationship between Edward and Bella is portrayed in a more intense and detailed way, which makes for a very engaging read.
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.