Their relationship can be developed through shared adventures. For example, they could go on a quest to find a rare ingredient for one of Princess Bubblegum's experiments. During this journey, they face many difficulties together like dangerous monsters or difficult terrains. This would force them to rely on each other, communicate more, and as a result, their bond would grow. Also, they could have heart - to - heart conversations. Maybe Marceline opens up about her past with her father and how it has affected her relationships. Princess Bubblegum listens and offers her support, which makes Marceline feel closer to her.
One way to develop their relationship is through acts of kindness. Princess Bubblegum could create a special treat just for Marceline, something that caters to her unique tastes as a vampire. In return, Marceline could use her vampire powers to protect the Candy Kingdom from a night - time threat. These small exchanges of kindness can build up over time. Another aspect is jealousy. If a new character shows an interest in either Marceline or Princess Bubblegum, it can make them realize their own feelings for each other. For example, if a handsome prince comes to court Princess Bubblegum, Marceline might feel a pang of jealousy that she didn't expect and then start to think more about her relationship with the princess.
The relationship can be developed through shared challenges. For example, if there's a sudden flood of chocolate in the Candy Kingdom that's endangering the lives of the gummy citizens. Prince Gumball and Princess Bubblegum have to work together to build dams and barriers. During this process, they rely on each other's strengths. Gumball might be good at coming up with quick - fix solutions, while Bubblegum is great at long - term planning. This mutual reliance can deepen their relationship.
In fanfiction, their relationship could be developed by having them team up for a noble cause, like saving the Candy Kingdom from a new threat. During this mission, they face challenges that require trust and cooperation. Finn might learn to be more patient with Marceline's mood swings, and Marceline could come to appreciate Finn's unwavering optimism. Also, they could have a friendly competition that turns into a deeper understanding of each other's strengths and weaknesses.
In such fanfiction, the lemon part usually implies a more adult - themed or steamy relationship exploration. However, it's important to note that this often goes beyond the boundaries of the original children - friendly Adventure Time series. Some writers might use it as a way to add a new dimension to their relationship, perhaps showing how they overcome challenges not just as friends but as lovers in a more intense setting.
The appeal might be the forbidden - like nature of their relationship in the original show. Fans are drawn to the idea of seeing what could happen if they had a more intimate relationship. It's like exploring uncharted territory.
Well, one of the popular themes is love. Their relationship has romantic undertones in the show, and in fanfiction, it's often explored more deeply. There's also the theme of power. Princess Bubblegum with her scientific and ruling power, and Marceline with her vampire powers can have stories where they deal with power imbalances or combine their powers for a common good. And of course, there's the theme of redemption. If there were past wrongs in their relationship, fanfictions might explore how they can redeem themselves in each other's eyes.
First, study their characters well. Watch the show to understand their personalities, likes, and dislikes. Then, come up with an interesting concept. It could be something like a day in their lives that hasn't been shown in the series. Next, create a simple plot. Maybe they go on a trip to a new place. Start writing and don't worry too much about making it perfect at first.
One idea could be a time - travel plot. Marceline accidentally sends herself and Princess Bubblegum back in time to when Ooo was first being formed. They have to work together to find a way back to their own time while also dealing with the primitive versions of their friends. Another could be a body - swap story. They wake up one day in each other's bodies and have to navigate each other's lives for a day, which leads to a lot of humorous and heartwarming moments as they understand each other better. A third plot could be a mystery where something strange is happening in the Candy Kingdom and Marceline teams up with Princess Bubblegum to solve it, and during the process, they discover hidden feelings for each other.
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.
Redemption can also be a theme. Maybe Marceline has some past actions she wants to make up for, or Bubblegum has to deal with some mistakes she's made in her rule, and they help each other through that. Also, acceptance is common, like accepting each other's flaws and differences, whether it's Marceline's vampiric nature or Bubblegum's sometimes over - controlling side.
You can try fanfiction websites like Archive of Our Own (AO3). It has a large collection of fan - made stories, including those about Marceline and Princess Bubblegum's relationship. Another option could be FanFiction.net, but AO3 usually has a more diverse and inclusive range of content in this regard.