Hi, this is my first time writing properly. Let me know if you like it or what I can do to improve. Enjoy!

"Finn, you're Insane!" said Marceline, floating out of her kitchen and over to the couch. "Why? I can do it Marcy." replied Finn walking over to where she had floated. Finn sat down next to Marceline, taking her hand in his, "You're human, this isn't any normal challenge, hundreds of vampires have failed this before" said Marceline, looking into Finns eyes "and there's no telling how they would react to the news that we are… Y'know, dating" Finn rose from the coach and walked to the fridge mumbling, "well it hasn't felt that way…" He opened the fridge and grabbed a soda, opening it and taking a large swig before catching Marceline glaring at him, "what?" he asked, "you know it's true, the only people which know about us are Jake and PB, because you're too scared another vampire will find out." "you think i'm happy with how things are?" Marceline hissed "sneaking around, not being able to go anywhere with you. I'm just as tired as you are!" her voice rose as tears formed in her eyes. Finn sighed guiltily, "i'm sorry Marcy," but she wasn't listening, she floated up to her bedroom, "I'm taking a shower."

Finn slumped into the sofa, he was 18 now and almost 19, so much had happened in the last 2 years since his dad disappeared with the cataclysmic comet. Since Orgalorg was defeated the evil in Ooo had slinked back into the shadows, PB had got her kingdom back from King of Ooo after he bailed when Rattle-balls had burst into his room in the dead of night and threatened him to leave immediately. Ice King had become heavily involved in his Fionna and Cake fan fiction and barely ever kidnapped princesses, but when he did it was only to torture them with his terrible stories. His relationship with Marceline had become much closer as they both knew what it was like to have an unreliable father, they became so much closer and would tell each other everything. When Finn had turned 18 Jake had thrown him a gigantic party, with Marceline's help, there was a huge gazebo with a dance floor and mountains of food, Citizens all over Ooo had come for the celebrations. It was during this part that Marceline had shown her true feelings towards him. Finn smiled as he remembered how she had pulled him behind the gazebo and landed the most passionate kiss she was capable of on his lips, then how they had snuck off back to the treehouse and had stargazed on the roof all night as Marceline sung for him, before realising how late it was for her and having to race back to her house.

Since then they had been a couple, but due to Marceline's royal status they had to keep it a secret or she could lose her title if the vampire council found out about her and Finn. The vampire community had little respect for humans and even less for vampires who decided to take on humans as a mate.

Vampire customs were incredibly strict when it came to royalty. If a vampire wished to become a mate with one of the royals they had to undergo a series of gruelling challenges to prove themselves worthy of mixing their genes with ones of the King or Queen. When Marceline had told Finn this he was determined to do the tests in order to prove to the vampires he was worthy of Marceline's love and they wouldn't have to hide their relationship anymore.

Finn got up and climbed up the ladder to find Marceline curled up on her bed, sniffling quietly, he crawled onto the bed next to her and wrapped his arms around her from behind. "I don't want to lose you Finn" she whispered "Shhhh" he replied, "you won't Marcy, I can do this." there was a moment of silence before Marceline turned to Finn "Okay" she said, looking at him "we'll try it." Finn smiled warmly before kissing her tenderly, "I better go Marcy" he whispered as he began to push himself up, "not tonight hero" Marceline smirked before pulling him back down and connecting his lips with her own.

After their lovemaking Finn was sleeping soundly under the covers as Marceline watched him, gently stroking his hair. She smiled warmly before turning off her lamp and resting her head onto a pillow.