Dipper would likely start as a curious and somewhat naive character. As he gets closer to Bill, he would become more confident in himself and his decisions. He might learn to be more accepting of the strange and unusual. Bill, on the other hand, could start as a rather self - centered entity. But through his relationship with Dipper, he would develop empathy and a sense of responsibility. He would become more attuned to Dipper's feelings and needs.
Dipper may initially be a bit intimidated by Bill, given Bill's power and his often unpredictable nature. But as their relationship progresses, he would find the good in Bill and start to stand up for their relationship. He would grow from a shy boy into a strong - willed man. Bill would also change. He has always been about chaos, but with Dipper, he would start to appreciate order and stability. He would learn to control his more destructive tendencies and focus on building a life with Dipper.
For Dipper, his development would be multi - faceted. In the beginning, he would be focused on his own small - scale adventures in Gravity Falls. But as he falls in love with Bill, his perspective would widen. He would start to think about the bigger picture of the universe and his place in it. Bill, who has been a free - roaming force, would now be tied to Dipper. This would force him to think about his actions and how they affect not just himself, but also Dipper. He would have to learn to be part of a team, which is a completely new concept for him, and this would lead to a lot of character growth for both of them as they move towards getting married.
Perhaps Bill, who has changed his ways a bit, tries to court Dipper in his own unique way. He shows Dipper different dimensions and secrets of the universe that only he can access. Dipper is initially hesitant but is drawn to Bill's charm and the mystery he represents. As they get to know each other more, they find that they complement each other well, and getting married seems like the natural next step for them. Their relationship could be a symbol of two different worlds coming together.
Mabel would likely be developed as the heart of the story. Her natural inclination towards love and friendship would be amplified. She might be the one who first reaches out to the other characters in the game, trying to spread love and positive emotions. Dipper, on the other hand, would be more of the strategist. He would use his intelligence to understand the game's rules related to love, like how love can be a power - up or a weakness. Bill would start as the antagonist, trying to disrupt the love in the game. But as the story progresses, he could be slowly influenced by Mabel's love, leading to a change in his character.
At first, they might develop their relationship through helping each other. Hans could assist Elsa in learning about diplomatic relations with other kingdoms, while Elsa could teach Hans about controlling his temper (assuming he has improved). As they spend time together in these educational and growth - oriented activities, they begin to see each other in a new light. They find themselves attracted to the new, improved versions of each other and so they get married.
Some characters may start as self - centered due to their cheating ways but then develop a sense of remorse. For example, they might realize the pain they've caused to their partner.
Pacifica might become more empathetic. Before having a baby, she was a bit spoiled. But now, she has to think about someone other than herself. Dipper, on the other hand, could become more responsible and protective. He was always the curious one, but now he has a family to look after.
In the fanfic, their relationship could be tested in many ways. Maybe there are misunderstandings about the pregnancy, like who should take more responsibility or what their future living arrangements should be. Through these challenges, they learn to communicate better. Charlie might become more assertive in expressing her needs and Harry could become more empathetic. This development in their relationship skills would be a major part of their character growth throughout the story.
At the beginning, they would be very cautious. Harry might be constantly worried about how his friends, especially Ron and Hermione, would react. Pansy would be concerned about losing her status among the Slytherins. As the story progresses, they could grow bolder. Maybe they start to take small risks like holding hands in semi - public places at Hogwarts. And towards the end, they might decide to come out publicly, facing whatever consequences come their way.
For Issei, his development could be about learning to balance his new role as a husband with his existing responsibilities. He might grow in terms of his strategic thinking, as he has to protect his wife and their relationship from those who oppose it. Fem Trihexa may start to develop a sense of vulnerability. In a marriage, she has to open up to Issei, which is new for her as a powerful being. This could lead to her showing a more human - like side, with emotions like love, fear, and hope.
Hermione would likely become more confident in her non - academic abilities. Bill, with his adventurous and worldly experiences, could teach her a lot about practical magic and survival skills. For example, he might show her how to better handle dangerous magical creatures, which would expand her knowledge beyond books. Bill, on the other hand, might become more in - depth in his thinking. Hermione's love for knowledge and constant questioning could make him more introspective. He may start to look at the wizarding world's traditions and problems from a more academic perspective.
In a married life story, Kiba would develop a deeper sense of loyalty. His loyalty to Hinata would be on a whole new level compared to his loyalty to his friends or the village. He would be more protective and would do anything to keep her safe. Hinata would grow in her communication skills. Since Kiba is more outspoken, she would learn to express her feelings and thoughts more freely, which would also help her in her ninja work as she could better communicate with her teammates.