Their relationship could develop through a series of adventures. For instance, they might team up to face a common enemy. Hermione's magic and Jasper's combat skills would be useful in such a situation. As they fight side by side, they start to trust each other more. Jasper might be intrigued by Hermione's unique brand of magic, which is very different from the powers he's used to in his world. This mutual fascination could be the start of their romantic relationship.
Well, in such a fanfiction, their relationship might start with a chance encounter. Maybe Hermione is exploring a new magical realm where she meets Jasper. At first, they could be wary of each other due to their different backgrounds. Hermione is from the wizarding world of Harry Potter and Jasper is from the Twilight universe. But as they get to know each other, they might find common ground in their strong wills and loyalty to their respective friends. Slowly, this could develop into a deep bond, with Hermione's intelligence and Jasper's vampire abilities complementing each other.
Often, in fanfiction, their relationship can be influenced by external events. For instance, if there is a threat to the school or the wizarding world. Hermione and Cedric might find themselves in the thick of it, working side by side to protect their friends and the magical community. During these intense times, they see the best and the worst in each other, and this deepens their bond. Cedric might admire Hermione's quick thinking and courage, while Hermione could be drawn to Cedric's selfless nature, and from there, their relationship as mates begins to form.
It could start with a chance encounter. Draco, in his god - like form, might save Hermione from a dangerous situation. This would immediately create a sense of indebtedness and intrigue on Hermione's part. Draco, seeing her strength and determination, would be attracted to her. They would then begin to communicate more, sharing their different views on magic and the wizarding world. Through these exchanges, their relationship would grow stronger.
Well, they could start off with some initial misunderstandings. Maybe Hermione, being as intelligent as she is, could initially be suspicious of Jasper's motives. But as the story progresses, they could discover they have common interests, like a love for ancient magic or a desire to protect their world from a new threat.
The fact that they come from different fictional universes is a big challenge. Their friends and families might not understand their relationship. For example, Hermione's friends in the wizarding world might be skeptical of her being with a vampire. And Jasper's vampire family may have concerns about him being involved with a witch. There could also be differences in their moral compasses. Hermione follows the laws of the wizarding world, while Jasper has his own vampire code, which might conflict at times.
Often, in these fanfictions, Hermione's intelligence complements the twins' creativity. Her knowledge of magic and books could be used to enhance their pranks or business ideas. Their relationship might develop as they work on various projects together. It could be that they find themselves relying on each other more and more, and feelings start to grow from that mutual trust and respect. The twins might be the first to realize they have deeper feelings for Hermione as they see her in a different light compared to other girls at Hogwarts.
One way could be through a mentorship. Remus, with his vast knowledge and experience, could guide Hermione in her studies of advanced magic, especially in areas like Defense Against the Dark Arts and werewolf lore. They could form a bond based on mutual respect for each other's intelligence and thirst for knowledge.
In the beginning, Snape might see Hermione as a responsibility because of their mate bond. But as he sees Hermione's determination to adapt to her new vampire self, he starts to respect and admire her. Hermione, in turn, realizes that there is more to Snape than his cold exterior. Their relationship could develop through shared experiences such as exploring the vampire underworld together. Snape could introduce Hermione to vampire culture, and Hermione could bring her unique perspective as a former witch, which enriches their relationship.
Often, in fanfictions, the development of their relationship is a slow - burn process. It could begin with simple exchanges of knowledge. Hermione might teach Fleur some complex magic theories, while Fleur could show Hermione some unique Beauxbatons magic. As they get to know each other better, they might start to have deeper emotional connections. Small gestures like helping each other in times of need or sharing secrets could lead to a more intimate relationship.
One way could be through a series of shared adventures. For example, Hermione might be working on some complex magic research related to werewolves, and Remus, being a werewolf himself, could offer unique insights. This common ground could gradually lead to a deeper connection between them. They could start as colleagues in the magical world of academia or research, and as they spend more time together, they realize they have feelings for each other.
I haven't come across a fanfiction where Hermione is Major Jasper's mate in a lemon context. However, fanfiction writers are very creative and it's possible that someone out there has written such a story. You might have to search through various fanfiction platforms like Archive of Our Own or FanFiction.net to find out.