You could start by establishing the relationships between the characters before the pregnancy revelation. If Dipper and Pacifica are in a relationship, show how they interact with Wendy as a friend. When Wendy's pregnancy is announced, have Dipper react with shock and confusion. He might feel a sense of responsibility towards Wendy even if they're just friends. Pacifica could initially be jealous but then grow to be more empathetic as she realizes the seriousness of the situation.
A possible fanfiction could be set in a future where Dipper and Pacifica are married. Wendy, who has moved away from Gravity Falls, returns pregnant. Her presence stirs up old memories and feelings for Dipper. Pacifica, on the other hand, is worried about how this will affect her relationship with Dipper. The story could unfold with Pacifica trying to be understanding while also being protective of her marriage, and Dipper trying to figure out his role in Wendy's life now that she's back and in this new situation.
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.
The development of their love story is slow but steady. First, they start off as acquaintances who don't really get along. But as they encounter the various mysteries in Gravity Falls, they begin to rely on each other. Dipper's intelligence and Pacifica's social skills come in handy. This mutual dependence leads to a growing respect and eventually love.
One possible fanfiction could be about Dipper and younger Wendy going on a mystery-solving adventure in the woods. Maybe they discover a hidden fairy glade that no one else in Gravity Falls has ever found. They have to work together to figure out the secrets of the glade, and in the process, their friendship deepens.
The fanfic might focus on Dipper and Pacifica's relationship during the Christmas season. They could start off as friends who gradually realize they have deeper feelings for each other. They might exchange Christmas gifts that have special meanings, like Dipper giving Pacifica a book about the hidden secrets of Gravity Falls that he has annotated with his own thoughts and discoveries.
Often, in this type of fanfiction, a common plot point is the initial attraction between Pacifica and Dipper. Maybe it starts innocently enough, like at a school dance or during an adventure in Gravity Falls. But then, Pacifica's yandere side starts to show. She might start stalking Dipper to know his every move. And as the story progresses, Dipper may find himself in increasingly difficult situations because of Pacifica's possessive love. There could also be a plot point where the other characters in Gravity Falls start to notice Pacifica's strange behavior towards Dipper and try to intervene.
One idea could be that Dipper and Pacifica team up to solve a mystery in Reverse Falls that's been plaguing the town. Maybe it has something to do with the strange occurrences that are unique to Reverse Falls. They start off as reluctant partners but gradually grow to trust and rely on each other.
I've heard that 'Pacifica's Change of Heart' is also a good one. It shows how Pacifica's character changes as she gets closer to Dipper and how their relationship blossoms.
Fanfiction about Dipper x Pacifica love can vary greatly. Some stories focus on a slow - burn romance. They might initially dislike each other, like in the show where Pacifica was a bit of a snob at first. But as the story progresses, Dipper's kind heart and intelligence might attract Pacifica, and her hidden insecurities and softer side could draw Dipper in. There are also fanfics that take a more magical approach, perhaps involving some sort of enchanted encounter that sparks their love.
Well, a 'yandere' character in fanfiction often brings intense and possessive elements. In a 'yandere Pacifica x Dipper' fanfiction, Pacifica might show extreme jealousy and over - protectiveness towards Dipper. It could lead to a lot of drama and conflict as Dipper might not be fully aware of Pacifica's yandere nature at first. This kind of pairing can create unique storylines that explore themes like obsession, love, and the darker side of relationships.