They arrive at Marshall's house just as the sun rises. The sky clouds hastily and pretty soon, it starts raining knives. Fionna is astounded by the knife storm's beauty. "Wow... you know, I've only seen one of these in my life." She peeks through the tiny window through the trees. He leads her upstairs. "Where are we going?" She asks. He doesn't respond, only smiles. They go to the last door on the right of the hallway. She's never been in it before. He goes in, covering her eyes.
He steps away. "Keep your eyes closed." He directs. She hears rustling.
"You can open them." He says beaming. Her eyes flutter open, scanning the view. She's in a huge room with a window covering an entire wall. No trees or cave to block the dark storm, she feels like she's outside, she can almost feel the strong with through her hair.
"Marshall... How did you do this?" She says in awe.
"It took some reconstruction... but I wanted to make it feel like you're outside, since I realized how much you love all that junk." He says with sincerity.
"So all this... is for me?" She asks shyly.
"Yes! This could be your room... if you want."
"But I like sleeping with you." She says sighing.
"I love sleeping with you too, Fi. It was just a suggestion, we can just hang out here then." He says grinning. He kisses her forehead. "Let's go to bed." He yawns. With knives pounding against the roof, they made their way down the stairs, grabbing a couple strawberries that they quickly devoured.
Marshall came up behind Fionna, grabbing her by the waist, kissing her neck. She giggles. He takes her hand, leading her up the stairs.
"Hold on, I'm gonna put on my jammies." She changes in the bathroom, once she comes out she's wearing one of Marshall's t-shirts with panties and no bra. The t-shirt is oversized and baggy on her petite yet curvy figure, he long blonde locks trail down her back, messy, but she looks adorable. Once they're in the bedroom, he lays down on the bed looking up at her, pulling her onto him. He's in his boxers.
She straddles him, his thumb tracing her cheek. She leans down with her head next to his. He kisses her softly, the sweet taste of his lips lingering. She kisses him, they embrace with him pulling her closer.
"Marshall..." she whispers. "Never leave, I love you so much. I need you."
"I love you too, Fi." He yawns again, stretching his muscles. "We'll rule... together... forever." He kisses her cheek. "Goodnight, Fi."
"Night, Marshall." She kisses him goodnight.
*Prince Gumball POV*
"No... no. It can't be." He punches the wall, infuriated. He somehow managed to keep a somewhat blank face during Fionna and Marshall Lee's visit.
"Why HER?" He paced back and forth, rage smothering his thoughts.
"What does she have that I don't?" Tears form in his eyes, just wanting to end it all.
"I-I loved him, I still do." He whispered to himself. His nails dug in his arm, trying to make the pain go away.
He opens the drapes, letting in bleak sunlight. He looks over his Kingdom, looking abandoned since everyone is inside, shielding themselves from the storm. He forces his face in his hands, trying to stop the tears. He lets out a shaky breath, gripping himself together. He's conflicted, he wants Fionna and Marshall happy, just not together.
He fell in love with Marshall years ago, he just hated his kind, but he was an exception. He was gentle and sweet, not wanting to hurt anyone. He always felt inferior to him, a mere candy prince while Marshall was a shape shifting, powerful, good looking being, almost invincible. Gumball knew Marshall would never love him, but it still broke him know he was engaged to someone, his best friend.