You can find 'Marceline x Finn fanfiction' on websites like Archive of Our Own (AO3). It has a large collection of fanfictions from various fandoms, including Adventure Time. Another good place is FanFiction.net, which has been around for a long time and has a decent amount of Adventure Time fanfictions.
Some Tumblr blogs are also dedicated to sharing and discussing Finn x Marceline fanfiction. You can search for relevant tags on Tumblr, like '#FinnxMarceline fanfic' and you might find some great recommendations or even some exclusive fan - made stories.
You can start by looking on Archive of Our Own (AO3). It has a large collection of fanfics, and you can easily search for Finn x Marceline ones. Just use the search bar and type in the relevant tags.
You can start by looking on Archive of Our Own (AO3). It has a large collection of Adventure Time fanfictions, including many focused on Finn and Marceline. Fanfiction.net is also a great place. Just search for Finn and Marceline in the Adventure Time section and you'll find a bunch of different stories.
You can try Archive of Our Own (AO3). It has a large collection of fanfics from various fandoms, including Adventure Time, and there are likely to be many Marceline loves Finn ones there. Just search for the relevant tags.
You can start by looking on Archive of Our Own (AO3). It has a large collection of Adventure Time fanfictions, including ones about Finn and Marceline being married. Just use the search bar and type in relevant keywords like 'Finn and Marceline married' and you'll get a list of results.
You can start by looking on Archive of Our Own (AO3). It has a large collection of fanfictions, and you can easily search for Marceline x Bubblegum ones using the search bar. Just type in the relevant tags like 'Marceline' and 'Bubblegum' and also 'relationship' if you want more targeted results.
I really like 'Finn and Marceline's Unlikely Alliance'. It shows a unique take on their relationship where they start off as reluctant partners but end up having a strong bond. There's also 'Marceline's Song for Finn' which is a more emotional fanfiction that focuses on Marceline's feelings towards Finn through her music.
I really like 'Finn and Marceline's Night Out'. In this fanfic, they have a sort of double - date situation with Jake and Lady Rainicorn which leads to some really funny and heartwarming moments. It shows a different side of their relationship in a more comical setting.
You can try websites like Archive of Our Own (AO3). It has a large collection of fanfics for various fandoms, including Adventure Time. Just search for 'Adventure Time Marceline kisses Finn' in the search bar and see what comes up. Another option is Fanfiction.net, which also has a lot of Adventure Time fanfics.
Fanfiction.net is another place to check. There are a lot of Star Wars fanfictions on this site as well. Navigate to the Star Wars section and then look for Finn x Rey specifically. Some of the stories might be a bit old - school in style but still very enjoyable.