There might be some stress on their relationship too. The fear of the unknown, the potential danger to Annabeth during pregnancy in their dangerous world, and the responsibility of raising a child could all cause arguments or moments of doubt. But through it all, their love for each other and their growing family would likely keep them together and help them work through these difficulties.
The relationship will likely grow stronger. They'll have to rely on each other more for daily tasks and support. For example, if Percy has a bad day at work or school, Annabeth will be there to comfort him right away, and vice versa. However, it could also be a bit strained at times. There might be moments when they feel suffocated by each other's presence, but they'll have to work through those feelings to keep their relationship healthy.
Well, they would probably communicate better. In Tartarus, they had to rely on clear communication to survive. So, back in the normal world, this would carry over. They'd be more open about their feelings, fears, and plans, which would strengthen their relationship in a more emotional way.
They might become more protective. Since they are dreaming of having a daughter, they would start to think about all the potential dangers she could face. Their relationship could grow deeper as they bond over their shared hopes and fears for their future child.
Their relationship would likely become more nurturing. They would have to rely on each other more as they take on the role of parents. For example, when the child has a nightmare about monsters, Percy might be the one to comfort the child first while Annabeth figures out how to better protect the home. Then they would discuss their concerns and fears for the child together, strengthening their bond as they face these new challenges as a couple.
Well, they would become more committed. Before marriage, they were just a couple, but after getting married in high school, they would start to think more about their future together. They might become more protective of each other, not just in battles but also in daily school life. For example, Percy would be more likely to stand up to any guy who flirts with Annabeth, and Annabeth would be more concerned about Percy's grades and his future career plans.
Their relationship could become more intense. With her hearing his thoughts, they'd be more in tune with each other's feelings. It might make their bond stronger as they'd understand each other on a deeper level.
Their relationship could become more intense. The hickeys might be a sign that they are moving to a more physical and passionate stage. Percy might become more protective of Annabeth as well, seeing how she's so openly showing her affection in this way.
In such a fanfiction, the relationship between Annabeth and Percy would be in tatters. Annabeth would have to deal with the fact that the person she loved and trusted left her at such a crucial time. Their friends' relationships would also be affected. Those who are closer to Annabeth would probably cut off ties with Percy. However, there could be a chance for redemption. If Percy realizes his mistake and tries to make amends, it could lead to a slow rebuilding of their relationship, but it would be a long and difficult process, especially with a baby in the picture.
Well, Percy is a complex character. His reaction could depend on how much he knew about the pregnancy before Annabeth left. If it was a complete surprise, he might be in denial for a while. He could also start to blame himself, thinking he had somehow failed her. And then he might eventually turn that pain into a determination to be a better person, whether or not he ever sees Annabeth again.
Their relationship would likely become more complex. They would have to rely on each other more, sharing a bond through the pregnancy. They might start to see each other in a new light, from just being rivals or comrades to being partners in this new phase of life.