What happened last:

It was finally time for Finn's birthday party after Marceline healed him with the Cyclops tears. After an hour or so of partying, Marcy pulled Finn aside to a secluded room to give him his "birthday present". And now they're alone and things are getting crazy again…

Marceline was being very persistent. She wanted to make sure that the hero boy didn't leave without her emotions and feelings being accurately conveyed in a way she saw fit. In a shroud of confusing pleasure, Finn was feeling like he was in paradise. Marceline was making sure that he would know how she feels about him at this point. And in about ten minutes, she was able to prove her point. …If you know what I mean…

During that intense new experience for Finn he was trying his best to find his bearings with the situation, having only some success. He was clawing at the vampire's back and biting her lip harder and harder. He had a hard time trying not to be too rough although Marceline wouldn't mind anyway. His hand seemed to figure things out on its own while the vampire queen was doing her own thing. She would occasionally let out a loud sigh or moan to indicate that he was doing something right. She tried to contain herself the whole time, but it was difficult because it had been a long time since she had done anything like this with anyone. It was a powerful feeling that she couldn't resist.

After Marceline was done "helping out" Finn, she rolled over on her side and they were both looking up at the ceiling. Finn was exhausted just as Marcy was, and they just laid there, trying their best to calm down.

F: "Well… that was… pretty math…" Finn said, sounding out of breath.

He could hardly understand what just happened. It was the most intense feeling that he's ever experienced. It was better than any dungeon crawl or victory from any battle. This feeling was superior.

M: "Yeah. You sounded like it was pretty good…" Marcy said, playfully mocking Finn.

They laid there for about another minute until one of them spoke again.

M: "Well… even though it's your birthday I'm still gonna say that it's my turn next time" Marceline said playfully, hinting at something that Finn wasn't aware of.

F: "Your turn?" Finn was confused… as always.

M: "*sigh* We'll cross that bridge when we get to it." Marceline accepted that Finn was as clueless as always.

Marcy got up and began to put her clothes on. She was very slow with doing this because she was still out of breath.

M: "So… we should get back out to the party."

F: "Word." Finn said as he started to put his clothes on. He felt like a champion.

They walked back out to the party area after getting dressed and everyone was still partying. The princess was over by the punch bowl talking to some candy people.

M: "Hey Finn, I'm gonna go talk to PB real quick."

F: "Ok Marcy." Finn said. He started to dance and party with some candy people.

Marceline approached Bonnibel in mid-sentence while she was talking to a few female candy people.

PB: "And I totally saw her on top of him, and I was like, "Hey girl, can I get in on that?"" The princess was gossiping like a teenager, adding her own twist to the story to make it more interesting.

Bonnibel turned in Marceline's direction not realizing that she was listening the whole time.

PB: "Oh! Uh… I-I was just kidding about that stuff Marcy…" PB said nervously as she uncomfortably tried to chuckle at the awkward situation.

M: "Anyways so… PB, do you have any info on that experiment you were telling me about?" Marcy said, ignoring Bonnie's gossiping behavior. She knew that PB absolutely loved to gossip and sometimes couldn't keep her mouth shut.

Marceline just disregarded what PB was saying because she didn't know that PB was referring to what happened only about 5 minutes ago.

PB: "Why y-yes I do, Finnceline. I have a lot to tell you actually." Bonnie sounded like she was caught doing something wrong for a second then quickly recovered with a joke.

M: "What did you just say?" Marceline thought that she misheard something.

PB: "Oh, I gave you and Finn a name. Obviously you two are together so why not have a cute name to make it official?" Bonnie said as she giggled, having fun with the situation.

M: "I don't think that's really necessary-?" The vampire queen was cut off by the princess ignoring her.

PB: "Anyway, yes I do have some newly updated information on my recent studies but I don't want to abandon my candy people at the party. But as soon as the party is over I'll show you what I've been working on. Also, it's time to cut Finn's cake." She said with an excited smile.

Jake was already nearby when he heard the princess mention cutting the cake and walked over.

PB: "Ok, I'm gonna tell the banana guards to bring the cake out."

CB: "Hey princess, Uhhh… I thought I was gonna do that?!" Cinnamon Bun said in his usual ridiculous voice.

PB: "Not this time CB, you already dropped the first cake we made; maybe next time." She said in her sympathetic voice.

CB: "Aww c'mon princess! That's not fair!"

PB: "*sigh* Ok fine. You can present Finn's sword. Go tell the banana guard by the kitchen door that I said that it's ok. But don't go in to get it until after the speech. You got that Cinnamon Bun?" She whispered.

CB: "Ah ha ah ha ha!" CB awkwardly laughed as he skipped away.

PB: "Well… I hope so…"

After that she clapped her hands twice and yelled at the top of her lungs to get everyone's attention.

PB: "Everyone! It's time to cut the cake!"

Everyone suddenly got quiet and turned to the princess. Then without missing a beat, two banana guards brought out the large cake from the candy kitchen that was dedicated to the hero. It was a massive cake that had multiple flavors divided up into sections. There were words on top if it that read: "To celebrate the birthday of the Hero of Ooo". It would have entirely been made out of chocolate but Bubblegum knew that Finn would rather the cake to be edible for everyone, especially Jake, than it be something that could potentially kill him.

Instead of singing an awkward song as the cake was brought out, everyone just clapped and cheered; which was also slightly awkward because everyone normally sang. Nobody seemed to mind that the traditional song wasn't sung.

But let's be honest, nobody really likes singing that song.

The banana guards brought the cake over to a large spot on the table with the punch bowl.

F: "Man… that cake is pretty math". Finn said in awe.

Everyone: "Happy Birthday, Finn" Everyone screamed, except for one.

CB: "Merry Christmas Finn!" Cinnamon Bun, being "half-baked" as the princess said that he was, once again yelled something ridiculous and out of turn.

Everyone ignored CB because they knew that he was like this and couldn't help it. The princess just slapped herself in the forehead with her palm. The only person to bust out laughing was Jake.

J: "BAHAHAHAHAH!" He was laughing uncontrollably as if everyone was joining him.

J: "Oh! Uh… That wasn't… funny… sorry." Jake said as he shrunk in size to draw less attention to himself.

After a moment of awkward silence (it was probably only awkward for Jake) everyone continued to clap, cheer, and sound generally happy. The room felt very lively and happy at this point.

M: "Happy birthday, hero." Marceline said with a smile as she kissed Finn on the cheek.

PB: "Ahem!" PB said, trying to quiet everyone down again before speaking.

PB: "Now, we all know why we're here today. And that's to celebrate Finn the Human's birthday! One of the greatest heroes in all of Ooo deserves a birthday as extravagant as this. He's been defending this kingdom and all of Ooo from evil for years and he's basically never failed. And what better way to commemorate this day to Finn than to party until our legs give out!?"

The candy people cheered in excitement. If the princess was good at only two things then they would be science and public speaking. She always knew what to say and how to get the crown do think how she did.

PB: "Now Finn, would you do the honors of cutting the cake?"

F: "Sure! But uhhh… I think I need a knife."

The princess didn't say anything, she just clapped her hands twice and Cinnamon Bun came from the kitchen with Finn's demon blood sword. He coordinated with a banana guard to do this because he wasn't exactly a mastermind when it came to planning.

Cinnamon Bun came running out of the kitchen with the sword. All of the candy people felt nervous that he was carrying it and running at the same time. The half-baked cinnamon bun was a very clumsy individual and often tripped over his own feet. Then suddenly, and to no one's surprise, Cinnamon Bun tripped and the sword was sent flying across the room like an arrow. It was headed straight for Marceline.

The vampire queen was busy looking at the handsome hero boy when this happened. She was daydreaming about him and what had happened between them in that dark room only a few minutes before and was completely oblivious.

Finn, on the other hand, was as hyper vigilant as he always is and quickly jumped between the vampire and the sword that was flying through the air at deadly speeds. He used all of his strength to stop the sword by catching it between his two palms.

Finn slammed his two palms over the blood colored blade with all of his might. A loud crack resonated throughout the room when this happened. The blade was successfully stopped and the tip of the blade was only inches from his chest. Normally, he would have caught it and would not have stood in front of it, putting himself at risk, but he was doing this to protect Marceline. If he failed the blade would have continued and would have still gravely wounded her, and Finn didn't want to take any chances with that. He was mostly unharmed from his amazing feat except for small cuts on his hands. Everyone cheered after the fact that Finn really did just catch that sword with his bare hands settled in.

PB: "And this is why Finn the Human is the true hero of Ooo; Ever vigilant and always ready for anything." PB said proudly then turned to Cinnamon bun with an angry look and walked towards him so that she could scold him.

During all of the commotion, Marceline turned to Finn with a smile and was shocked and amazed by his vigilance and seemingly advanced reflexes.

M: "Wow Finn…" She was speechless.

Then suddenly, Finn's vision became focused only on Marceline as everything around them began to blur. He could swear that he could see pink rose pedals falling from the ceiling. He blinked a few times and Marceline was suddenly wearing a long black dress with red lace. Her hair was voluptuous and beautiful, more so than it normally was. She was wearing a tiara that had black gems and a few rubies in it. She also had a small amount of makeup on, which was a lot for her. She had a light layer of black eyeliner on and a subtle shade of blush on her cheeks. She looked extravagant and as if she was going to attend a wedding of some sort. She was absolutely stunning.

Finn walked over to her so that he could see into her eyes better. He completely forgot that there were other people around. In fact, it seemed as though everyone left. The room was mostly dark except for the one light illuminating the vampire queen and the human boy.

M: "Kiss me, my king."

Finn didn't say anything; he just grabbed Marceline and placed his hands on her lower back so that he could dip her backwards, just like some sort of Hispanic dance that Finn's never even heard of. He doesn't know where it came from; he just felt like it was fitting for the time being. When he was completely supporting her weight in his arms he kissed her gently on the lips. Then he slowly pressed harder against her, showing how he felt.

M: "Finn."

Finn loved the way she said his name; he didn't let it interrupt his embrace.

M: "Finn!"

Finn began to think to himself.

F: "How she able to talk if I'm…" He thought.

The sudden realization of this impossibility made him come back to reality. He was daydreaming somehow. He looked around himself; he was hugging and kissing his sword; bent over as if he was holding someone. He seems to have gotten lost in his thoughts of Marceline again.

PB: "Finn! What are you doing, silly?" PB was the one talking the whole time.

Many candy people in the room were giggling because of what Finn was doing because it seemed quite bizarre from their point of view.

CB: "YEAH FINN, WHAT ARE YOU DOING?!" Cinnamon Bun yelled, not having much of an inside voice.

Everyone within ten feet of CB covered their ears because he yelled soo loudly.

F: "Uh… it was… an interpretive dance? Ta da!" Finn said, beginning to sweat from the embarrassment.

PB: "Suuuuure." PB had a good guess at what Finn was actually thinking about.

PB: "Anyway, so Finn, can you now cut the cake?"

F: "Math yeah!"

Finn raised his demon blade, preparing to cut the cake. He paused for a second to look at Marceline, who was standing close by, just looking at Finn. She was looking as beautiful as ever; she never ceased to amaze Finn.

He used all of his strength to pull the sword down and cut the cake. He cut his birthday cake with perfection except that he almost cut the table in half in the process. Everyone cheered once again and the party continued for a few more hours.

The party went on for a while. The candy people gradually began to leave until almost nobody was left.

F: "Hey Marcy, wanna go on a dungeon crawl with me and Jake tomorrow?" Finn said, sounding happy.

M: "I'd love to Finn, but me and Bonnie are gonna have a girls-day-out tomorrow. I got stuff that I gotta do."

F: "Ok then Mar Mar; maybe some other time." Finn didn't sound disappointed at all. After all, he's been with her for the entire past week for the most part.

M: "Yeah, next time for sure." She smiled and blushed.

F: "Ok I'll see you later Marcy. Let's roll out Jake!"

J: "Dinner roll!" Jake yelled from across the room. He sometimes said random things like that to be funny.

The two adventurers left the kingdom and made their way back home to their tree house. As soon as they were out the door, Marceline turned to the princess with a serious look on her face.

M: "Ok PB, let's go see Simon."

At the end of Ch 20 I thought that I'd add in some random trivia about the story: The original name was "Le Cœur de l'hero." Which means "The Hero's Heart" in French. but this is a story in English so it had to change. :p
And I made a video of an extended version of the AT theme song. The link is on the bottom of my profile if anyone is curious.