Hey guys, first time Adventure Time fanfic right here. Please R&R. I love getting constructive criticism so yeah... Fair warning Fiolee! Ship it or Hate it but haters gonna hate man!

Nightosphere Portal

FIONNA'S POV

"Suga, you sure we should be here?" Cake asked me. I shrugged.

"Why not? We got as much right as anybody." I told her. Cake grumbled something.

"Suga, this is Marshall Lee's cave." Cake said, the name rolled off her tongue with a spike of loathing. We kept going farther into the cave. Sure it was Marshall Lee's cave but why not see what things lurked in it. Suddenly the cave was illuminated and at least three dozen bats blasted out. I spun around. Flame Prince.

"FP! What are you doing here?" I hissed. A light in Marshall Lee's house flicked on.

"Hey Fionna." He said nonchalantly. I ran up to him and we dragged him out of the cave right before Marshall Lee opened his door and shouted 'Anybody there?'

"Glob dude! You can't just do that!" I hissed again.

"Do what?" He asked, totally oblivious.

"Oh my glob." I sighed. He didn't get it. "Dude..." I whined. Nothing. "You can't just barge in on our adventures man. Marshall Lee almost caught us back there!" I growled. He put his hands up in surrender.

"Okay Fionna, sorry." He muttered.

MARSHALL LEE'S POV

I knew a light had woken me up, I mean I think me of all people would be sensitive to that. But I could've sworn I'd heard Fionna's voice. Fionna was cool, we were lumpin friends man.

I shrugged and walked back upstairs. It was still light out so I had a little longer to sleep. I flopped back on my bed and started to float. But I couldn't sleep, my mind was on Fionna. She's the shiz shaz dude and now I couldn't get her out of my brain muscle.

"Screw it." I grumbled and floated down to the ground. I floated down the stairs and into the kitchen. Strawberries dude. They also rock. I grabbed a container of them and just chowed down. I floated above the couch and sucked the red out of them and tossed the white ones out the open window. "I should watch a movie." I mumbled. I put down the strawberries and floated over to the TV.

The Exorcist... Nah

Dawn of the Dead... Nope

Cabin in the Woods... Yeah why not? I popped the disc into the DVD player. Hell yeah, horror movies man, damn fine. I floated back to the coach and kicked back.

It was late into the night when I finished. I yawned, flicked off the TV and floated upstairs to grab some real clothes. Red flannel, blue jeans, red converse. The usual. That's when I heard something. A twig snapping. I zipped down to the door and flung it open. The culprit: FIONNA. I was about to shout 'Get out of here!' when I realized who it was.

"Oh. Hey Fionna." I said in my totally chill, I-don't-give-a-glob voice.

"Hey Marshall." She squeaked.

"I was just about to head out to a totally rad party over at LSP's place, wanna come?" I asked. She shrugged.

"Nah, I gotta be getting back. Cake'll be worried and Flame Prince is coming over later." She replied. Flame Prince. I shrugged.

"Whatever. See you round dude." I said floated away.

FIONNA'S POV

Holy glob was that was close. Marshall was cool (try amazing, SHUT UP!) and all but last time he'd taken me to LSP's place he stole Cake and faked his death to tease me.

What had I been doing in the cave again?

Ha... yeah uh... ha. Um, yeah. No real reason. Just... uh... Adventuring.

Anyways, FP was coming over and we were going to plan an awesome adventure together. Kick some major butt dude!

I arrived back at the Treehouse to find Flame Prince setting the table. No Cake anywhere.

"Where's Cake?" I asked, hanging up my adventure backpack.

"Out with Lord Monochromicorn." He said absent-mindedly as he set down a serving plate of something awesome smelling. FP walked past me and kissed me cheek. I blushed.

"Glob, FP. What's up with you today?" I asked, giggling.

"Just doing something nice for my awesome girlfriend." He said. I blushed brighter. FP was pretty great. I heard some weird noise so I turned and looked out the window. I saw a blur of black hair and a bright blue light that quickly disappeared. FP turned around. "Fionna?" He asked.

"What? Oh nothing! Just thought I saw a nightosphere portal. Never mind. Just crazy!" I said and we sat down.

MARSHALL LEE'S POV

Holy glob! She almost saw me! Good thing I have a quick brain. I had summoned a quick...

Nightosphere portal...