"Y/n" you felt someone shaking you slowly and you rolled over and spoke out softly "hm..w-what..?" You opened one of your eyes and saw Finn smiling at you "there's a party happening today and we're invited " you looked at him confused but when you sat up and looked at him fully, you saw he was wearing only swom shorts and his hat "come on!" You laughed and sat up "okay, okay" you stretched and heard laughter from the living room "we'll be waiting down stairs" Finn kissed your forehead and went down into the living room, you were confused but changed into shorts and a blue T-shirt "there" you walked down into the living room to see people you haven't met yet, there was a girl that looked like she was on fire, a bear that was wearing a hat identical to Finns, a goose that was speaking in riddles, and what seemed to be a purple lumpy cloud? "Y/n!!" You turned and saw Finn call you over "hey" you smiled and walked over and he hugged you and you hugged back "oh, is this her?" You heard the flaming girl speak out, she seemed to be around yours and Finns age, "she's so pretty!" She smiled and looked at you "oh, Hi my name's flame princess but you can just call me fp" she smiled more and looked at Finn "well, I'll leave you two alone" she laughed and walked away "bye y/n" she went and joined in on a conversation with a small slime that was wearing a crown "who are these people?" You whispered to Finn and he laughed "oh yeah, sorry" he took your hand and walked over to everyone "hey everyone this is my girlfriend! Her name is y/n" he blushed and showed you off "uh..Hi" you waved and smiled shyly as everyone looked at you "she's pretty finn" a small voice spoke out and you looked down to see a small berry wearing a crown "thank you" you smiled "what's your name?" She smiled "I'm wildberry princess" she put her hands behind her back and a wiener dog walked out from behind her "Hi, my name's hotdog princess!" You smiled a small but warming smile and thought to yourself 'more..princesses..' You sighed and a voice made its way to you "oh my lumping gosh" you looked around and a purple being came towards you "uh.." She sighed "do you not know who I lumping am?" You tried not to laugh and you shook your head "I'm lumpy space princess" she looked to the side, "and I'm slime princess!" You looked down and saw the cute princess and you laughed awkwardly "the party is here!!" You and everyone else looked at the door and saw marceline float in with an umbrella "Marceline!" You smiled and hugged her and laughed "are we gonna go?" She spike out and looked at Finn and he smiled and put his shirt on "yeah!" You looked at him confused "um, where are we going exactly?" He mentally face palmed "I'm sorry for not saying anything, we're all going to the beach, and there's gonna be a bon fire at the end when it starts to get late" you smiled but then looked down "but I don't have a swimsuit.." You felt a hand on your shoulder and it was Marceline "don't worry, I got you!" She smiled and took your hand and went to help you put it on. After some time you came out wearing shorts and a blue T-shirt you were wearing before and smiled "all right lets go!" Finn took your hand and everyone made their way out, some princesses wanted to talk and walk with Finn and you didn't want to seem jealous so you walked with Marceline but always kept gglances at Finn and the princesses , Marceline took notice "don't worry about them.." She whispered and you sighed "its just..after what happened with princess pink...or whatever..I just worry" she laughed a little "wait..princess pink? Do you mean princess bubblegum?" She floated laughing next to you, keeping the umbrella on her "yeah" you nodded and she sighed "she always pulls Finn back after making him leave her alone, its sad really" she shook her head and looked at Finn and Flame princess "so..Finn and FP used to be a thing..and when he first started with her..pb messed with his head and he freaked..they broke up awhile after" she smiled and you looked to the side "who else ..has Finn dated..?" You looked up at her and she frowned a little "oh..no one else.." She smiled a little and stopped floating and decided to walk next to you "just forget about it, today is supposed to be a fun day!" She laughed a little Finn glanced at you two but was pulled along with the princesses. After some time you all set down towels and your bags and some princesses played in the water while Flame princess built a castle and Marceline was humming and reading a book under her umbrella and you sat under it with her and watched Finn run around and laugh with everyone else "join him" you heard Marceline speak out and you shook your head and she sighed "okay.." You smiled and heard giggling and laughing and you looked around and soon saw ladyranicorn and Jake cuddling under an umbrella and he was telling her stories and jokes, Finn took notice of you seeing then and he walked over to you without hesitation " uh..y/n?" You looked up to see Finn standing in front of you and you smiled "yeah?" He held his hand out and smiled "wanna go for a walk?" You smiled and took his hand, "yeah that sounds nice.." He pulled you up and intertwined his fingers with yours and you blushed, you looked back at Marceline and she gave you a thumbs up and you rolled your eyes playfully. After sometime the sun started setting and you were siting on a rock and Finn was leaning on you, you sighed and looked down at your hands "y/n?" You heard Finn speak and you glanced at him "yeah?" He closed his eyes and spoke out softly "what's bothering you?" You stood up and tried to act like you were confused "w-what do you mean?" He looked at you and frowned a little "I know somethings bothering you, what is it? " you sighed knowing you couldn't hide anything so you looked down and spoke softly "its just..after what happened at the castle...with the princess..I mean now there's more princesses? And you used to date Flame princess..I guess I'm just a little jealous.." He chuckled and grabbed your hand "you don't have to be..I'm yours, and no one else's " he blushed, gently cupped your cheek in one hand and kissed you gently, you kissed him back and you pulled away "thanks Finn" you smiled and he turned around, his back facing you and you jumped on "yay!" You laughed and so did he. You two made it back to the spot where everyone was and some tents were set up and there was a bonfire in the center "there they are! " you heard Jake call out and you smiled and waved "come join us!" Marceline shouted out and there was one spot open so Finn sat down and let you sit on his lap "Marceline played her guitar and sang a song while everyone ate marshmallows and you and Finn held hands and you soon laid down in a tent with Finn and cuddled until you fell asleep and until he fell asleep .