I tried writing other versions of this story, but this is the one that felt right

Its kinda important to me

I hope you will enjoy it

"Finn, I'm sorry, but I cant be with you. You know what would happen." "I don't care Marceline! I want to be with you, and spend the time I have with you." Finn had asked Marceline out for the third time. She, obviously, had said no. "I'm sorry Finn... I really like you, but it wouldn't work because I'm..." "Immortal." Marceline looked down. Finn didn't want her to feel bad, he just wanted to love her. Since they met, Finn has been her best friend and confidant. They could talk about anything with each other. Especially Finn. Around the other princesses he was always awkward, but he could be himself around her, she completed him. For a while now, they had been meeting by the tree between both their homes. It was a large old tree where they would go to talk. Marceline usually wanted to talk about her dad, and Finn usually just listened. Sometimes though, they would just sit and watch the moon. Tonight was one of those very situations. Finn couldn't help himself from asking her out, he loved her. "Goodnight Finn" Marceline floated down and gave him a hug. "You know I'll always be there for you, no matter what" Finn said as he gladly hugged back. Marceline was usually cold, from the few times they've ever touched, but her hugs always seemed warm. "Thanks Finn" she whispered softly. "Goodnight Marceline" Finn said as she floated away. He sat there and watched as she turned into a black spec against the moon. There has to be a way thought Finn. "There has to be a way" said Marceline, she was beginning to tear up.

The next night Finn was sitting on a branch on the tree. Marceline floated up and sat next to him. "You came." Marceline said as she hugged him. "Of course, I'll always be here for you." Finn thought he heard her sniffle, and hugged tighter. Marceline crying? She never cries. And they sat there for a while. They fell asleep on the branch. "I wish you were Finn..."

The next morning, Finn woke up on the branch, Marceline gone, determined and ready. He had a plan, if anyone had even the slightest knowledge of immortality, it would be Princess Bubblegum. She has to, with all that sciencey stuff she does. "Jake I'm heading out" Finn yelled as he grabbed his pack and went out the door. "Okay, I'll be hanging with Lady today then." Jake yelled back, Finn could tell the joy in his voice. Jake loved spending time with her, especially now that shes pregnant. Jake always said she was "glowing" but Finn thought that was just because of her rainicorn powers.

Finn was directed by peppermint butler to the lab where PB usually spends her time. "Yo PB you know anything about immortality?" "Not much, the only thing I know is you cant die. My only source on this wont be a part of any experiments." PB pouted. Finn knew she was talking about Marceline, the only known immortal in Ooo. "Excuse me master Finn, but did you say... Immortality?" peppermint butler said as he escorted Finn down to the gate. "Uh yeah, why? You know anything about it? Tell me!" Finn was getting excited. Of course he would know! He knows Death for Glob's sake. "Oh I know a thing or two. But I will need something first" "Sure! What do need?" "You need to royal promise that you wont tell anyone." Peppermint butler's face had a dark look to it, Finn was getting scared. I need to do this for Marceline, I cant stand not being with her any more. "Of course! Please tell me, I cant stand it!" Finn was practically bouncing off the walls. Its actually happening! "The only way to become immortal, short of becoming a vampire, is to make a deal with Death" Finn would not become a vampire, people needed his help in the day, not night. Meanwhile, Peppermint Butler was looking scary, his face was full of fear and... hunger? Finn was getting creeped out. "Of course! Thanks PB!" Finn put on his best smile, never mind the unnerving look of Peppermint Butler, he could finally be with Marceline! He ran out of the candy kingdom as fast as he could

When Finn got home, he stared at a corner, crossed his eyes, and next thing he knew he was in the dead world. Thankfully by Death's castle this time. He made his way inside to the garden where he found a skeleton with a long horse-like skull in a white gardener's uniform. "Hey Death!" "What the? Oh, you again. What did you kill this time?" Death was giving Finn a tired look, which must be very hard considering he was just a skeleton. "Nothing this time, actually its about un-death." Finn was visibly nervous. "So, you want to be immortal huh?" This brought a sinister smile to Death's... Face? Finn got into his toughest stance, chest out, with his head as clear and focused as possible. Finn sternly answered "Yes." "Well, I trust you know I cant just give away immortality for free right?" "Yeah" "Well, it turns out that you've been filling this place up quite a bit, and that has gotta stop kid. My offer is this, since you apparently have to kill something every time you save someone, no more rescuing, killing, or heroics of any sort." This hit Finn like a brick wall. I cant be a hero any more? But I get to be with Marceline... I have to do this. Finn felt a ping of selfish guilt, but he loved Marceline so much. "Deal"

Theres the first part of three

Give me some reviews so I can do what you people like

Now, if you don't mind, I'll be getting back to "3 lives" for a while