The relationship might become more equal. Since Sakura is stronger, Sasuke can't look down on her as he might have in the original story. They could become more like true partners, respecting each other's abilities.
Sakura being stronger could lead to Sasuke having to rely on her more. This might initially be a blow to his pride, but over time, it could lead to a deeper bond. He may start to see her in a new light and develop stronger feelings for her out of admiration for her strength. For example, in battles, he might look to her for guidance or backup, which is a big change from their previous dynamic.
The relationship often becomes more strained. Sasuke's punishment can make Sakura feel resentful at first. But over time, it can also lead to her becoming more independent as she tries to prove herself to him.
Their relationship could become stronger. With a son, they have a new bond that ties them together even more. They might communicate more often and share their parenting experiences. They could also rely on each other more in terms of protecting their family.
Their relationship would likely become more intimate and committed. With a baby on the way, Sasuke would feel a greater sense of responsibility towards Sakura. He might be more protective and stay closer to her.
Their relationship could become more strained. Sakura might be afraid of Sasuke after the bite, creating distance between them. Sasuke, on the other hand, could be filled with regret and try to avoid her, which would further complicate their relationship.
Their relationship can be shown as one filled with deep love and care. Sasuke, who has always been a bit aloof, becomes much more tender and attentive towards Sakura during her pregnancy. He might start doing small things like getting her favorite foods or just sitting with her and talking about their future as a family.
The relationship can also be developed through their interactions with other characters. For instance, if they have a child, how they both interact with the child and how their parenting styles differ and blend. Also, how they interact with their friends like Naruto and Hinata. Maybe they have double dates or group outings. All these interactions can show different aspects of their relationship and how it grows and evolves over time.
It could become more strained. Sasuke might start to avoid Sakura even more after snapping at her. This would make Sakura sad and she might start to question her relationship with him.
It often changes drastically. Sakura may initially feel hurt and angry. She might start to question all her previous beliefs about Naruto. For example, if Naruto betrays her trust in a battle situation by seemingly siding with the enemy, Sakura's view of him as a reliable friend and teammate would be shattered.
They become more united as they face the challenges of parenting together. Their relationship deepens as they share the joys and sorrows of raising a child.
Their relationship would likely become more intense. As vampires, their emotions might be heightened. They could become more possessive of each other. For example, Sasuke might be more protective of Sakura, seeing her as his mate in the vampire sense.