They could develop their relationship by communicating more openly. Since the pregnancy changes things, they need to talk about their fears, hopes, and dreams. For example, Jamie could share his dreams of having a big family with Eddie, which makes her feel more secure.
To develop their relationship, they could rely on each other's support more. Jamie could be there for Eddie during her pregnancy symptoms, like when she's feeling nauseous or moody. Eddie, in turn, could support Jamie in his work by being understanding when he has to work long hours. This mutual support would make their relationship more solid as they await the arrival of their baby.
One idea could be that they initially struggle with the news. Jamie might be worried about being a good father, while Eddie could be concerned about how it will affect her career. They could then start to plan for the future together, with Jamie becoming more protective of Eddie.
In fanfictions, their relationship is often shown as becoming even more loving. Jamie is very protective of Eddie, always making sure she's comfortable and has everything she needs. Eddie, on the other hand, is more independent but also appreciates Jamie's care.
Well, in some versions, their relationship deepens with Peeta becoming even more protective. He might start taking on more responsibilities around their living area, like gathering more food or making sure their place is safe. Katniss, on the other hand, could initially be a bit hesitant but gradually warms up to the idea of being a mother with Peeta by her side.
Their relationship will likely become even more intimate. There will be a new level of vulnerability as Claire is going through the physical and emotional changes of pregnancy. Jamie will become more nurturing, taking on more responsibilities around the house and in taking care of Claire. For instance, he'll be more concerned about her diet and rest.
The relationship would likely become more intense. They would have to rely on each other more, and their bond would deepen as they are about to become parents. Inuyasha would probably become more protective of Kagome.
Ron could develop a deeper understanding of Ginny. He may realize how strong she is, especially when dealing with the physical and emotional changes during pregnancy. Ginny might also see Ron in a new light, as he steps up to support her. He could start taking on more jobs around the house or helping her with her daily tasks. This would strengthen their relationship and help them both grow as individuals.
Typically, Vegeta's character growth is a big part of how their relationship progresses. As Bulma is pregnant, he begins to see the importance of the family he's creating. He might train less rigorously to be around more for Bulma. This new dynamic makes their relationship more complex and loving, with them depending on each other more and learning to compromise.
Their relationship might start off tentatively. Since they haven't seen each other for a while, there could be some shyness. But as they start sharing stories, it could quickly warm up. They may realize they've missed each other more than they thought and become closer friends than before.
One popular plot could be how they adjust to their new life as parents - from baby-proofing their home to dealing with sleepless nights. Another might be the reactions of their family members in the Reagan clan. For example, how Frank gives his fatherly advice, or how Danny teases them but also offers his support.
It would likely strengthen their relationship. The shared experience of having a child would bring them closer together. They would have to rely on each other more, and Thor would become more protective of Jane.