Some side characters can also be standouts. For instance, Serena is sometimes written in a way that adds a new dimension to the Blair - Chuck relationship. Her friendship or rivalry with Blair can be reimagined in interesting ways that impact Blair and Chuck's story. Also, Nate can be written in a way that he serves as a moral compass or a source of support for either Blair or Chuck.
Well, Blair and Chuck themselves are often very well - written in fanfic. Writers can really dig deep into their complex relationship and individual personalities. For Blair, they can show her strong - willed side but also her insecurities. As for Chuck, his growth from a playboy to a more committed person can be explored in great detail.
The parents of Blair and Chuck can also be great characters in fanfic. Their influence on their children's relationship, whether it's through business deals or family traditions, can be explored. The writers can create more backstory for them and show how they shape the world that Blair and Chuck inhabit.
Chuck is also a great character in fanfiction. His complex personality, with his charm and ruthlessness, makes him a fascinating subject. Writers can delve into his past and how it shapes his actions towards Jenny.
One great Blair and Chuck fanfiction is 'The Redemption of Chuck Bass'. It delves deep into Chuck's journey to become a better man for Blair. Another is 'Blair's New Beginning with Chuck' which shows their relationship after overcoming many obstacles. There's also 'Chuck and Blair's Paris Adventure' that takes them on a romantic escapade in Paris.
One interesting plotline could be Blair and Chuck facing new challenges in their relationship that are different from what's shown in the original series. For example, they might have to deal with a new social rival who tries to break them apart.
The baby character can also be really well - written in some fanfictions. Writers can give the baby a distinct personality even at a young age, making it a key part of the story. For example, a baby that is really perceptive and seems to understand the adults' drama more than expected can be an interesting addition.
In the fanfiction 'Chuck's True Love', the OC named Lily is very well - written. She's a confident businesswoman who matches Chuck's wits. Their interactions are sharp and engaging.
There's also 'Chuck and Blair's New Beginning'. This fanfic takes a different approach. It starts with them in a new city, away from all the drama of the Upper East Side. They have to build their relationship from scratch without the influence of their families and the gossip mill. It's a refreshing take on their story.
Love and passion are common themes. Their relationship was so intense on the show, and fanfiction often explores that further.
There could also be other supporting characters from the original series. For instance, Serena van der Woodsen might be a significant character in the fanfic. She could be Blair's best friend and offer advice or create some drama in their married life. Nate Archibald might also be involved, perhaps as a business partner to Chuck or an old acquaintance who causes some tension in their relationship.
Nate could be a great addition. He could be a confidant to either Chuck or Blair, and his own storylines could intersect with their married life. For example, if he gets into a business deal that affects Chuck and Blair's business.
You can start by looking on fanfiction.net. It has a large collection of Gossip Girl fanfics, and you can easily search for Chuck and Blair - centered ones. Just use the search bar and type in 'Chuck and Blair Gossip Girl' and you'll get a bunch of results.