One possible reason in such a fanfiction could be a magical bond that forms between Harry and Draco unexpectedly. This bond might be stronger than his relationship with Ginny. It could be a result of a shared magical experience or a prophecy that ties them together in a way that makes Harry question his feelings for Ginny and ultimately choose Draco.
In some fanfictions, Draco might propose to Ginny after a long journey of character development for both of them. Maybe they've been through some difficult situations together, like fighting a common enemy. This could make them see each other in a new light. As they start to understand and respect one another more deeply, Draco could find the courage to propose to Ginny.
The first consequence could be the breakdown of his friendship with Ron. Since Ron is Ginny's brother, he would likely be very angry at Harry for hurting his sister. Another consequence might be the division within the wizarding community. Fans of Harry and Ginny as a couple would be disappointed, and there could be a lot of speculation and gossip.
Ginny might first be in shock and denial. But then she could draw on her Gryffindor courage. She would probably turn to her family for support. The Weasleys are a close - knit family, and they would surely rally around her, providing emotional and practical help.
One possible reason could be that Draco is scared of the responsibility. He might come from a family with certain expectations and the idea of having a child with Ginny, who is from a different side in the wizarding world, could be too much for him to handle.
It could be that Draco is following orders from some dark forces. They see Ginny as a way to get to Harry, and Draco, being their follower, tries to target Ginny. He might think that by getting Ginny, he can gain more power or favor within those dark circles.
In this type of fanfiction, it could be that Harry has some unresolved issues from his past relationship with Cho. He sees Ginny as a distraction from dealing with those. But as time goes on, he can't ignore the pull he still feels towards Cho. He may leave Ginny when he realizes that he can't move forward in his life without exploring what could have been with Cho again.
Well, Harry leaving for America in fanfiction could lead to him trying to adapt to a new culture. He might struggle with the differences in magic use between the two countries. For example, the way spells are pronounced or the types of potions that are popular. He could also get involved in some sort of mystery that is unique to the American wizarding community.
In the fanfiction, it could be that Harry is taking Teddy away to protect him from something. There might be a new threat emerging in the wizarding world, and Harry, with his experience, decides to keep Teddy safe by leaving with him. They could end up at a secret location, where Harry starts to train Teddy in advanced magic, sharing all his knowledge and skills.
They might share some sweet and private moments. Maybe they have a cozy dinner together and talk about their future, like Ginny sharing her dreams of playing Quidditch professionally while Harry listens intently.
Ginny's character could develop in several ways. She may initially be heartbroken and feel lost without Harry. But as the pregnancy progresses, she could find an inner strength. She might become more protective, not just of her unborn child but also of her own feelings. She could also become more empathetic towards other single mothers in the wizarding world. This experience could make her a more complex and well - rounded character, no longer just the girl who was in love with Harry but a strong woman facing a difficult situation.