One common theme is friendship. Their friendship is often explored, like how they give each other advice on singing and performing. For example, in many fanfics, Blaine helps Rachel with her confidence when she's feeling down about an audition.
There's also 'Blaine and Rachel: Unlikely Allies'. This fanfic shows them coming together to overcome challenges in the school's music department. It has some really heartwarming moments between the two characters. It's a great read if you like to see their relationship develop in unexpected ways.
Friendship - turned - love is also a popular theme. They start as friends or just acquaintances in the Glee club context, and then gradually their relationship evolves into something more romantic. For example, in some fanfics, they start by competing against each other but end up falling in love.
There's a fanfic called 'Shared Stages'. In this story, Blaine and Rachel are both in New York trying to make it big. They start as rivals but gradually become friends who support each other in auditions and performances. It's a really heartwarming read that shows their growth as characters.
One popular trope is the 'unlikely friendship'. Since they have different personalities and musical styles in the show, fanfics often explore how they can form a deep and meaningful friendship. For example, in many stories, they start off not getting along but then find common ground in their love for performing.
Another option is Wattpad. Although it has a wide variety of content, you can still find some interesting Glee fanfictions featuring Rachel and Blaine. You may need to do a bit more searching compared to the other two platforms, but it's worth a try.
One great story could be about Rachel and Blaine teaming up for a musical performance that changes their relationship dynamics. They might start off as rivals but through the process of rehearsing, they develop a deep friendship and mutual respect.
Their friends could have a wide range of reactions. Some might be overjoyed and offer lots of support, like bringing over baby clothes and offering to babysit in the future. Others might be a bit more skeptical, especially if Blaine and Rachel's relationship has been a bit rocky before. They could worry that the couple isn't ready for this big step.
One great Blaine and Rachel fanfiction is 'A New Harmony'. It beautifully explores their relationship in a post - Glee club setting. They both pursue their Broadway dreams while also dealing with their feelings for each other.
A common and interesting plotline is their collaboration on a Broadway - style musical production. They could be the leads and have to work through their different acting and singing styles. Blaine might bring his charm and smooth vocal style while Rachel's more powerful and diva - like presence creates a contrast that they have to blend together for the success of the show.