Well, given their different backgrounds, their relationship development could be a bit rocky at first. Jon's upbringing in the North makes him more down - to - earth and practical. Rhaenys, as a Targaryen, may have grander and more ambitious ideas. However, they could find common ground in their desire for a better Westeros. For example, Jon wants to protect the North and all of Westeros from the threats beyond the Wall, while Rhaenys may want to reclaim the Iron Throne for the Targaryens. As they work towards these goals together, they could start to respect and love each other.
One possibility could be that in the fanfic, Jon and Rhaenys form an alliance to take on the common enemies in Westeros. They might realize that their combined strengths, Jon's leadership skills and Rhaenys' claim to the throne, could be a powerful force. This could lead to them gathering support from different houses and ultimately changing the power dynamics in the Seven Kingdoms.
The story might start with Rhaenys seeking Jon out. She has heard tales of his deeds and believes he can be an asset in her quest for the throne. As they join forces, they face many challenges. There could be battles against other claimants, as well as internal struggles within their own alliance. Jon and Rhaenys would have to learn to trust each other fully, which could be a slow and difficult process, but as they do, their story could lead to a new chapter in the history of Westeros.
One possible plotline could be that they meet in a secret location. Maybe Rhaenys is on a mission and Jon stumbles upon her. They initially distrust each other due to the complex political situation in Westeros. But as they start to talk, they realize they have more in common than they thought. They both have a sense of justice and a desire to see the realm in a better state. This could lead to them forming an alliance and working together to face the various threats in Westeros.
He could develop a more overbearing sense of responsibility. Since he has these great powers, he may feel that it's entirely on him to save Westeros from all threats, whether it's the White Walkers or the power - hungry lords. This could lead to him making some tough decisions that not everyone will agree with.
If they were in a more peaceful setting, like a small village away from the wars and power struggles of Westeros, their relationship could develop more slowly and gently. Arya could help Gendry with his blacksmithing work, and Gendry could teach Arya about the simple joys of village life. Their love might grow out of shared everyday experiences rather than the life - or - death situations they usually face.
Sansa, on the other hand, might have a more complex relationship. She has her own ideas about ruling and the North. Initially, she might be cautious about the baby, but over time, she could come to see it as a symbol of unity for all of Westeros and work towards building a relationship with it for the greater good of the realm.
Their relationship could start off rocky. Jon, being a man of the North and having grown up as a bastard, might be skeptical of Aegon, who was raised with a sense of Targaryen royalty. However, as they face common enemies and challenges, they would gradually start to understand each other. For example, when they are both targeted by the Lannisters, they have to rely on each other's skills. Jon's combat expertise and Aegon's diplomatic knowledge could complement each other, leading to a grudging respect that over time turns into a deep friendship.
Their relationship might become stronger. They've both been through so much alone, and now they'll depend on each other more. They could become like partners in crime again, just like when they were kids, but with a more mature bond.
In fanfic, the relationship between Jon and Sansa can be quite complex. Often, they are reunited after a long time apart. Their bond is strengthened by the shared goal of protecting their family's legacy. They rely on each other's strengths, with Jon's military experience and Sansa's political acumen.
Their relationship could be developed differently by having more open communication from the start. In the show, there were a lot of secrets between them. If in the fanfic, they were completely honest with each other right away, it would change the dynamic. For example, Jon could immediately tell Daenerys about his true parentage, and Daenerys could share her insecurities about ruling Westeros.