I'm sick and in love with you - ML x GP

Fionna and cake walked past the Vampire King, whom was floating around playing his bass axe. He was trying to write a song for his crush. Fionna stopped and looked up and Marshall Lee. "What are you doing Marshall Lee?" She asked, cake standing at her side looking at the vampire the same as the human. "Writing a song." The human girl shited from right to left. "Sounds like a love song. Who's it for?" She smiled. As from the expression he could tell that she was hoping it was for her. But, it wasn't. "For this person i like. I'm planning on singing it to them after i figure out the lyrics. If i can't i'll just pick a song i know." She smiled even larger and he made no hint that it was for her. So he didn't understand how she still went on thinking it was her.
After Fionna had left he gave up on trying to write it. He couldn't think of anything to say. It was just random words that he felt when around that person. He blew his bangs from his eyes and soared over to his home going straight for his computer. "What song can i sing for Gumball?" He murmured to himself scrolling through his iTunes playlist. "This one." He smiled and left the house heading for the Gumball kingdom.

He floated up to the balcony which Gumball was standing at. "Marshall what are you doing here?" He asked shifting uncomfortably as the handsome vampire king hung in the sky infront of him. "I wanted to tell you somethin. . . ." Gumball's stomache was full of butterflies, hoping that it was what he hoped it was. Marshall became nervous and color filled his blue face. He pulled out his bass and started to strum.
"Dear, I wrote you a song, despite the fact you did me wrong. And dear, I don't know what the hell is going on with you, but something ain't right. You tell me that you love me then you go and leave me, why you do this to me, baby? I'm lovesick. I just can't eat, just can't sleep, can't do much of anything at all, cause I'm sick and in love with you, dear.
Dear, I wrote you this song, in hopes that you would sing along. And dear I've been working my ass off for you cause something ain't right. You tell me that you love me then you go and leave me, why you do this to me, baby? I'm love, ooh, ooh, sick. I just can't eat, just can't sleep,  can't do much of anything at all. Cause I'm sick and in love, oh, you tell me that you love me then you go and leave me why you do this to me, baby? I'm lovesick I just can't eat, just can't sleep,  can't do much of anything at all. Cause I'm sick and in love with you, dear. " At the last strum he brought himself to stand on the balcony across from Gumball. The pink haired prince's face was full of bright color and his hand was over his mouth. The black haired fellow stood there waiting for an answer, fearing the worst. He slung his bass onto his back and fiddled with his hands. The prince walked toward the king whom stiffened and colored. "Marshall. ." He said bringing his hands to the blue man's face.
"I love you, Gumball. . ."
"I love you too, Marshall."
And with those words said Gumball kissed Marshall Lee lightly on the lips. Making the vampires dead heart beat quickly. He moved so he could kiss him back. They stood there for what seemed like forever melting into eachother. Little did they know a gaping human girl and cat were below.