Well, it's possible. In the Adventure Time world, the characters have complex relationships. Fanfiction often delves into uncharted territories of these relationships. But keep in mind that not all fanfiction is of the same quality. You might have to sift through a lot to find one that really satisfies your interest in this particular concept. It's also important to note that different fanfictions may handle this idea in different ways, some might be more light - hearted while others could be more serious in their exploration of Finn and Princess Bubblegum in this situation.
It could be a very interesting story. Maybe it would explore how Finn and Princess Bubblegum deal with the unexpected situation, like their reactions and how they plan for the future.
I'm not sure specifically about 'lemon' fanfiction as it often refers to inappropriate or adult - themed content. However, there are many great Finn and Princess Bubblegum fanfictions that focus on their friendship, adventures together, or the development of a more innocent relationship. You can try searching on fanfiction platforms like Archive of Our Own and filter for appropriate stories.
Finn is brave and always ready for an adventure. His fearless nature can lead to many exciting situations in fanfiction. For example, he can be the one to drag Princess Bubblegum out of her lab and into the unknown. Princess Bubblegum, on the other hand, is highly intelligent and has a strong sense of responsibility for her kingdom. This contrast between their personalities can create great storylines, like Finn teaching Princess Bubblegum to be more spontaneous while she teaches him about science and leadership.
Love in the face of danger is also a popular theme. Given the many threats in their world, fanfictions might depict how their love for each other gives them the strength to face those threats. It could be a monster attack or a problem within the Candy Kingdom, and their love is what keeps them going and helps them find solutions.
Maybe in the fanfiction, there's a misunderstanding at first. Finn thinks Bubblegum only sees him as a friend. But then some magical event occurs that makes their true emotions surface. For example, a love - inducing spell goes wrong and affects everyone in the Land of Ooo except Finn and Bubblegum. As they try to fix it, they get closer and closer until they finally kiss. This kiss could be the key to reversing the spell.
I'm not sure if there is specifically 'interesting' finn and flame princess pregnant fanfiction. It depends on different writers' creativity. Some fanfictions might focus on the challenges they face during the pregnancy, like how Finn would deal with his responsibilities and Flame Princess would handle her new state while still having her fiery nature.
Well, 'Finn and PB: A New Beginning' is a really interesting finn x princess bubblegum fanfiction. In this story, after a big battle, Finn and PB start to see their relationship in a new light. They begin to understand their feelings for each other more deeply. Also, 'The Love That Grew in the Candy Gardens' shows how their relationship blossoms as they work side by side in the gardens. And don't forget 'Finn's Promise to PB' where Finn makes a big promise to protect PB no matter what.
You can find finn x princess bubblegum fanfiction on some popular fanfiction websites like Archive of Our Own (AO3). It has a wide range of stories written by different authors. Another place is FanFiction.net, which also has a good collection of such fanfictions.
One interesting storyline could be Finn and Princess Bubblegum going on an adventure to discover a new magical land in Ooo. They might face various challenges like strange creatures and difficult terrains, and in the process, their friendship could deepen.
You can try looking on fanfiction.net. There are often a variety of stories about Finn and Princess Bubblegum's relationship there.