Marshall Lee was never fond of Prince Gumball. He didn't hate him; he just wasn't particularly fond of him and he wasn't sure why. Maybe it was the fact that the made of candy prince was a complete wuss that didn't get his pranks. Or maybe it was how he was completely pink from head to toe, that annoyed Marshall. Or maybe it was the fact that Prince Gumball's first name was Barneby. But one thing Marshall Lee really hated was the amount of time Gumball spent with Fionna. Though really he hated that he could spent that type of time with her (because everyone knows Marshall Lee could not go out into the sun) and everytime he thinks of his best friend hanging out more with that prince than him, his unbeating heart sinks a little.
It was one of those nights where Fionna came to hang out with Marshall Lee after a tiring day of adventuring. She laid down on his couch, hat off and hair down, listening to him as he plucked the strings of his axe bass and humed along with the melody. She sat up as he finished and began to speak about her day in the Candy Kingdom.
"So then PG was kipnapped by Ice Queen again..."
He tuned her out. 'Just like him, always needing to be rescued like a damsel in distressed and of course Fionna comes to his rescue,' he thought. He glanced at her as she continued to speak. He watched the way her eyes lit up when she spoke about him and he felt a deep pang at his unbeating heart. 'What is this? Could it? No. No, it couln't be.' Marshall Lee could not have feelings for his human best friend, other than the type of caring best friends have for each other, but looking at her blab on about Barneby Gumball and blush as she told him about how the prince kissed her hand he couldn't help that weird ache he felt. She smiled as bright as the sun (or at least as bright as he remebered the sun being) and that ache came again even stronger as he thought sadly, 'She probably never smiles that wide when she talks about me.' He shakes away his depressing thought and tells himself to pull it together, that Fionna can like Gumball if she wants because he had no romantic feelings for her. He repeated the thought in his head a few times ('I don't like Fionna that way'). Though he had a hard time believing his own words.
"And he's invited me to one of his tea banquets tomorrow," she finished. Pang. There it is again that weird ache again. He smiles at her, but sighs inwardly.
"Thats great Fi," he tells her as the ache grows greater. Yes ladies and gentlemen, Marshall Lee the Vampire King was jealous.