Chuck is a very likely candidate as he has a long - standing and complicated relationship with Blair in the Gossip Girl series. In many fanfictions, their relationship often leads to such a situation, and the drama of them dealing with a pregnancy together is a popular plot.
In some fanfictions, Blair's pregnancy could lead to her re - evaluating her relationships. Maybe she realizes that she has been too focused on the wrong things and starts to build stronger bonds with her family. It could also be a journey of self - discovery for her as she prepares to become a mother. She might start taking on more mature responsibilities and change her party - girl ways.
One possible storyline could be Blair dealing with the pregnancy while trying to keep it a secret from her high - society friends and family. She might struggle with how it will affect her image and future plans.
Many fanfictions explore their relationship by putting them in new situations. When Blair is pregnant, they might have to deal with public scrutiny. This forces them to communicate better and support each other. Their love, which was often tumultuous in the show, becomes more stable as they face this new chapter together. They start to understand each other's fears and hopes more clearly, like how Chuck may be afraid of being like his father but Blair gives him the confidence to be a better man.
One great fanfiction could be 'Chuck and Blair's New Beginning'. In it, they face the challenges of pregnancy with their usual charm and tenacity. It shows how they grow together and prepare for parenthood, all while dealing with the Upper East Side drama.
Serena is often a popular character in these fanfictions. She might be Blair's maid of honor and get involved in all the pre - wedding drama. Nate could also be a prominent figure, perhaps as Chuck's best man, and his relationship with other characters can add more depth to the story.
One interesting plotline could be a time - travel twist. Maybe Blair travels back in time to their first meeting and realizes she wants to change some things to make their wedding day even more perfect. Another could be a 'what - if' scenario where Chuck and Blair have to deal with a long - lost relative showing up right before the wedding and causing chaos.
It could be Dan. Since they had a long - standing relationship in the show, it's not a stretch to imagine that they had a moment that led to Serena getting pregnant. Their relationship was always full of drama and passion, so this would add another layer to their story.
One great Nate and Blair fanfiction is 'The Reunion'. It beautifully captures their complex relationship. It shows how they still have feelings for each other even after all the drama in the show. Another good one is 'Nate and Blair's Second Chance' which explores what would happen if they got a fresh start.
One great 'Gossip Girl' Serena and Blair fanfiction is 'The Unlikely Alliance'. It shows their complex friendship in a new light, with them teaming up against a common enemy at school. It's really engaging as it delves deep into their characters.
Some of the top Blair and Nate fanfictions include 'Lost Love Found'. In this story, they accidentally cross paths in Paris and start to rekindle their relationship. It's full of romantic moments and descriptions of the Parisian scenery. 'Second Chances' is also a great one. It gives them a second chance at love, but they have to deal with their families' interference. 'The Blair - Nate Chronicles' is a series of short stories that explore different aspects of their relationship, from their first kiss to their break - ups and possible reconciliations.