Disclaimer: I don't own Adventure Time. The only thing I own is the song, homie. :P
Marshall Lee sighs, watching the rain fall as he floats above his front porch, keeping a steady beat on his electric guitar, Finn permanently ingrained in his mind.
Finn. He's all he can think about. He wants to breathe him in, eat him as if he is the color red, and most of all, he wants to hug him like he'll never get the chance again, repeating the mantra "I love you" until his voice stops working.
But he's too awkward to even look at him without going insane.
He's too scared to touch him, in fear that he'll explode or something.
He knows it's weird, but he himself is weird.
"Finn, Finn, Finn," he sings quietly, eyes closed as he floats into a lying position. "Maybe it's just a phase. Maybe I'm going insane." He hears Finn's laughter and sees his smile in his mind. "Maybe it's the way he smiles at me or the way he shouts with glee."
He imagines Finn's possible reactions to a confession. "Maybe, maybe I just love him. Maybe I love him." The best one: Finn blushes, backing away, then mutters those four words before running off—"I love you, too."
"Maybe those injuries could heal faster if I bit him."
He thinks about how often Finn shows him a new injury, talking about how it's 'a new addition to his collection of scars'. He wishes he wouldn't injure that perfect, buttermilk skin that's sun-kissed and makes him feel like he's friends with sunshine.
"Maybe he likes someone else."
His mind wanders to when Finn always lamented about Flame Princess, now the Flame King. He remembers wanting to find that girl who made Finn hurt and douse her in ice water. He was just blind with rage.
"Maybe we weren't meant to be, and maybe I love him."
He knows that he's unfit for Finn, and is always being beaten up about it.
"Why do I love him? Why is that so?"
Floating away from his front porch and into the rain that soaks him in seconds, Marshall feels the music fill his entire being.
"Why does my heart fill with fear whenever he's near? Why does he hurt me so badly with just one touch?"
It's possible that he hasn't noticed that Finn is walking his way, but is too far to hear him. He sings out, unaware of anything but himself and his never ending thoughts.
"Maybe I love him," he sings as he floats further from the house, ultimately closer to Finn.
"Maybe I love him..too much."
As he finishes that last line, he turns to face a wide-eyed and sleep-deprived Finn, who stares at him incredulously. He stops altogether, eyes locked on Finn's. And then, tired of all the bullcrap, he grabs the mystified Finn by the chin, pulling his face in close.
"Maybe I love you..." he begins, breath fanning against the other boy's lips.
Finn, lost in the moment and anticipation, finishes with, "..just enough."
In that moment, all Marshall's countless fantasies about pressing his lips to Finn's all diminish except for one: Kissing in the Rain. He'd kiss Finn after serenading him, and then they'd live happily ever after.
Hopefully, they will.