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.
Often, their relationship is shown as deeper and more unbreakable. They've been through Tartarus together, which is like the ultimate test. So in fanfiction, they trust each other completely and are always there for one another.
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.
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.
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.
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.
At first, it might become strained. Annabeth could be hurt and pull away from Percy. She might not want to be around him as much.
Their relationship would likely become even deeper. They would be partners not only in their heroic adventures but also in parenting. They would have to support each other in raising their child, like Annabeth helping Percy understand their child's academic needs while Percy might be better at teaching combat skills. They would also have to make decisions together about their child's future, whether it's about staying at Camp Half - Blood or trying to live a more normal life in the mortal world.
In fanfiction, after Tartarus, Percy and Annabeth could be on a journey of self - discovery together. They've seen the darkest parts of themselves and each other in Tartarus. So they might be exploring who they are now, how they've changed, and how their relationship has evolved as a result. Maybe they take some time away from the chaos of their demigod duties to really understand their feelings for each other.
Their relationship often deepens through shared hardships. In Tartarus, they rely on each other completely. For example, when facing a particularly tough monster, they have to trust each other's instincts and abilities, which brings them closer.
In some fanfictions, their relationship could become more complex. They might have seen sides of each other in Tartarus that they didn't expect, and it could cause some friction. But at the same time, they also have this unbreakable connection because of what they've been through. They might argue more about how to deal with the after - effects of Tartarus, like Percy wanting to just forget and move on while Annabeth wants to analyze and learn from it. However, in the end, they still love each other deeply.