Well, perhaps in the fanfiction, Ziva has a deeper understanding of Gibbs' past or his way of thinking. She might be able to anticipate his actions better than Tony. Also, her skills, like her combat and espionage skills, could make her a more valuable asset in certain storylines. So Gibbs would choose her over Tony.
In some fanfictions, the emotional connection between Gibbs and Ziva might be developed in a unique way. They could share some experiences that Tony isn't a part of. For example, they might have been on a dangerous mission together where Ziva proved herself not only as a great teammate but also someone who could understand Gibbs on a deeper level. This could lead Gibbs to choose her over Tony.
The relationship dynamics play a big role. If in the fanfiction, Tony is often shown as more of a joker and not as serious in crucial moments, while Ziva is always reliable. Gibbs, being a no - nonsense kind of guy, would likely side with Ziva. Their relationships with Gibbs are different in nature. Ziva might have a more professional and at the same time more empathetic connection with Gibbs.
One possible plot could be that Gibbs and Ziva are in a secret relationship. When Ziva discovers she's pregnant, she's initially terrified. Gibbs, on the other hand, is surprisingly calm and determined to support her. They face many challenges, like hiding the pregnancy from their colleagues at first. Gibbs starts to make small changes in their work environment to ensure Ziva's safety and comfort.
One possible scenario could be that they meet in a familiar place, like the old NCIS office. They might exchange some witty banter at first, just like in the old days. Then, they could start reminiscing about their past cases together.
One reason could be jealousy. Maybe Tony has been spending more time with one of them, and the other feels left out and jealous. For example, if Tony has been helping Steve with some high - tech projects and Bucky feels ignored, it could lead to a fight. Another reason might be a misunderstanding. They could misinterpret Tony's actions towards each of them. Say, Tony gives Steve a special gift, and Bucky thinks it means something more than just friendship, leading to a fight.
In some NCIS fanfiction, Ziva could be pregnant. Fanfiction often explores different scenarios for beloved characters. Writers might create a story where Ziva's pregnancy brings new challenges and developments to her relationship with Tony. It could be a plot device to explore deeper emotions and create more complex storylines within the NCIS universe.
They could face difficulties with their respective families. Ziva's family might have strong opinions about the pregnancy, and Gibbs' family (if we consider his past family life) could also be a factor. They would need to navigate through these family issues while also dealing with their own feelings about becoming parents.
One possibility could be that it would completely change their dynamic at work. They might become more protective of each other and start to think about their future outside of NCIS. For example, Tony might become more serious and start thinking about settling down in a more permanent way. Ziva, on the other hand, might struggle with how being pregnant would affect her role as an agent.
There's also 'Hidden Feelings'. In this fanfiction, the author delves deep into the unspoken attraction between Gibbs and Ziva. It has some really interesting plot twists that keep you engaged. The lemon aspect is tastefully done, adding a bit of spice to their relationship exploration.
In this fanfiction, perhaps there could be a storyline where their pregnancy is a secret at first within the NCIS team. Gibbs and Ziva try to keep their normal routine while dealing with the physical and emotional changes that come with pregnancy. There could be some comical moments, like when Ziva has cravings during a case and Gibbs has to quickly find what she wants.
In the fanfic, Hermione might regret choosing Ron over Harry because Harry has a different level of understanding when it comes to her academic pursuits. Harry, having faced the challenges of fighting Voldemort from a young age, might have a deeper respect for Hermione's thirst for knowledge and her need to constantly learn and improve. Ron, on the other hand, sometimes showed impatience with Hermione's studious nature.