A/N: Well, if you read How Much I Love You, this is awkward.. I promised this fic to those who cared 2 days after publishing the last chapter and well… Its August! . Sorry about that, I'm super lazy and this fic is my baby of the moment so it's really long.. I'm really in love with it though hehe. We're gonna have Fionna be a little OOC here cause I dunno how she'd really be if she's pitted against Cake over such a topic. There aren't many fics in M for this pairing, which is a shame :/. So share the wealth with anyone you think might be interested, and most importantly, enjoy it!

DISCLAIMER: I DO NOT OWN ADVENTURE TIME OR ANY OF THE CHARACTERS! THIS STORY IS FOR ENTERTAINMENT PURPOSES ONLY!

Fionna the Human ran through the trees at breakneck speed; wanting to get to the Fire Kingdom before her date with Flame Prince so that she could meet Flambia for a quick favor; and she was already running late.

She was going to ask the little flame creature to utter the one little incantation that would allow for her to wear a flame shield that would last. One that would last longer than just a few hours. The thought had occurred to her yesterday while she was daydreaming about the prince. To this very moment, she cursed herself for not finding the obvious answer two years ago when they began dating. She wished to go one whole date without her skin burning, or having to wrap herself in twenty pounds of aluminum foil. Because at seventeen, she had finally grown deathly tired of not being able to kiss or even touch her boyfriend. Being honest with herself, she couldn't figure out how they'd managed to last so long together, seeing as how they couldn't come into physical contact with each other for more than five seconds at a time. Although, merely being close to him was enough sometimes. Sometimes. She wanted a more normal relationship. She knew after they'd hit the two-year mark about 3 months ago that it was getting really serious, really fast. Fionna felt like she was just becoming aware of how much they mean to each other.

Each day, she found herself falling deeper under his spell, wanting to spend all of her free time with him, causing tension between herself and her feline sister. An inexplicable desire to be near him. Cake still clearly objected to their relationship to this day, still distrustful of him and overly protective of Fionna, who hated the fact that she sometimes had to lie to her best friend constantly and sneak out to see him, all just to avoid a big fight. She almost couldn't believe that Cake had disapproved of him for so long, and with each passing day that the two got closer, Fionna and Cake's relationship became more and more strained. Her only salvation from the tense atmosphere that conversations of him usually brought about was their nightly rendezvous' at the large oak tree in their front yard, mostly out of view from their home. She really hated to lie, but it was just that….. Whenever he smiled at her, even looked at her, the world melted away. She sometimes thought she liked him too much, and it scared her. But often times, when they were alone, she'd forget their physical limitations and touch his face, subsequently causing his flame to grow brighter, scorching her immediately. He'd then pull back, apologizing a million times, face pinched in worry, despite her having been the one to touch him. Of course, she'd smile and assure him that everything was fine, when in reality she'd curse her weak human skin.

She arrived at the kingdom, already a full ten minutes late for her date back at the lawn in front of the tree house, despite leaving ten minutes early She really regretted her decision to run all of the way there.

"Flambia!" She yelled, catching up to the little fire ball before she went into her little home. "I need a favor!" Fionna doubled over and gulped in the limited hot air, hands on her knees. "Can you—flame shield—on—me? Please?" She huffed.

"No problem, sweetheart." Flambia said in her typical mobster style. Fionna fished a chunk of charcoal from her green backpack and flicked it in the ember's direction. "Oh, ya shouldn't've!" She gushed, jumping and catching the nugget in her mouth. She stuck the landing and began muttering the incantation, throwing her hands up in vaguely familiar hand gestures. In seconds, Fionna felt the cooling sensation of the veil fall around her. "There ya go, sweet cheeks."

"Thanks." Fionna sighed. "Got any fire lions willing to give me a lift home?" Fionna stood and grabbed a handful of charcoal bits from her pack, showing them to Flambia.

"Oh sure, not a problem." She said, whistling into the cave before them, and the young adventuress watched as her ten foot ride came bounding from the darkness. "Please take Fionna the Human back to her home, she has a treat for you." The playful flame lion scooped her up, and Fionna bounced home on its back in ten minutes flat.

OoO

Fionna showed up a full twenty minutes late, ad she craned her eagerly to see around the enormous tree that marked "their" spot of the hulking, grassy hill that her house lay on. The fire lion was long gone and Fionna excitement began to whittle away, leaving only pangs of disappointment as she could not see him from her current vantage point. He probably thought she'd stood him up. She walked slowly around and over to the tree, still trying to look behind it. The sun was retreating back behind the far mountains, painting the sky with brilliant shades of pink and orange. Fionna sighed, watching the clouds flee lazily across the sky. She then caught a glimpse of a soft and familiar glow of light, nearly the color of the sky, as she rounded the trunk of the oak. Flame Prince stepped out from behind it, offering Fionna a relieved smile. "You're late," He uttered, rasing a single eyebrow. She sped up, relief crashing through her own body, propelling every step she took.

"Hey, Fionna—slow down—" She threw herself at the prince, knocking his body to the permanently charred ground. She constricted his neck with a crushing hug and snuggled his chest, enjoying the warm, not at all hot feeling she was met with upon doing so. A startled Flame Prince pushed her back, eyes wide in astonishment. "Fionna?—h-how?!" He stuttered. The bunny-eared adventuress laughed. "Is that a flame shield?" He inquired. She grinned madly. He slapped his forehead with one palm. "Why didn't I think of this before?! I live in the Fire Kingdom for Glob's sake!" He laughed, his chest filled with warmth as he clutched her tightly to him. "I'm sorry I was too stupid to think of this before!"

As Flame Prince hugged her harder, Fionna felt like crying. How long had she waited to be held like this? To hold someone like this? It felt like a dream to her; completely unreal. Her eyes became misty and she pushed back. "Kiss me." She whispered. He touched the side of her face, turning her limbs to mush. How she'd longed to feel his fingers stroke her face! Fionna closed her eyes for a brief moment and her head gave a brief nod.

"Kiss me so I know that this isn't just a daydream—my imagination." She took in his attentive expression and her grip on his shirt tightened. "Kiss me for real." The prince leaned up tentatively and captured her lips for the first time after a few failed attempts since they began dating. His flame increased as he relaxed. He wasn't going to hurt her. The unfamiliar and amazing feeling etched itself into his memory and heart forever. Their lips parted and he gave her a slight smile, losing himself in her beautiful blue eyes; a sharp contrast to his intense maroon ones. "Again." She breathed in a whisper. FP lifted his head toward hers again; and they touched noses, never letting her eyes leave his. At first, their lips danced around each other, not touching. Fionna squeezed his shirt, eyes fluttering closed and her lips finally connected harshly to the ones in front of them.

The adventuress's heart soared higher and higher, her head spinning so hard she felt dizzy. What is this feeling? In its flight, her heart beat impossibly fast. She felt the kiss deepen as he slid his tongue into her mouth. Normally, she would've thought this to be gross, but it felt so strangely good that she didn't care. Instead, she sighed and let it happen, sinking deeper and deeper into him, not noticing or bothering to care that it was now dark outside, or that Cake had begun calling to her from the tree house. While in her trance-like state, she vaguely worried for Flame Prince's sake that a certain cat would come out looking for her and bust them, chewing her out for her misdeeds over tacos later. Or worse-during a huge fight. The thing was—she just. Didn't. Care! She was finally, finally able to be with him, and even though her feelings for him continued to grow at an alarming rate, and the idea that this new world would simply increase them frightened her, she didn't want anyone to ruin this for them; "this" that they'd waited so long and patiently for. She felt his sharp canine nip her bottom lip. Not hard, but hard enough to send her reeling. She couldn't understand the budding feeling, but she didn't necessarily want or need to. It felt so natural. In response to his playful nibble, her hands clutched his shirt harder, and, gasping, she crushed her lips harder to his own. She reveled in the sensation of his free hand slipping under her shirt and over her back to caress the soft skin there. With this hand pressing back down into her waist, her thighs slipped off of his, one landing outside of his right, and the other in between his long legs. Because of this the prince shifted a bit; an action that caused the blonde's short skirt to scrunch up quite a bit, leaving her underwear nearly exposed, as well as her right thigh to jostle something stiff, which she pegged as a hip bone—or something. Oblivious to anything around her, she focused on his warm lips and, despite the cool veil of protection around her, Fionna felt hot.

"Fionna—" Flame Prince moaned against her, in a voice she'd never heard before. He lifted her easily and reversed their positions, lying the heroine gently on the black ground, and pulling her white bunny cap off to reveal her tumble of glossy blonde hair; stark against the dead grass beneath it. He'd always been oddly attracted to her hair, because he'd never seen any like it in his own kingdom. Its shiny finish, thick body, and platinum color was so incredibly unique to him. How he'd always longed to touch it. Her already flushed face brightened as her kiss-swollen lips pulled into an easy, inviting smile. FP let his palm hover over her right breast, resisting the urge to touch her there. Chest heaving, the girl reached up and stroked the side of his cheek, her piercing baby-blue eyes searing into his own. He closed his eyes in an attempt to calm himself, feeling the soft and gentle pressure of her small hand on his cheek. She was definitely making this "courtesy" thing difficult. He felt his excitement pressing against her left thigh, and the blood roaring in his ears began to cloud his judgment. The heat stained her cheeks and he gulped. He wanted badly to continue to kiss her, to touch her—embrace her; and now that he finally could, well… He wanted her. Her other hand extended toward his face, wanting to pull him down. She was reaching for him again. Glob, he couldn't refuse her when she asked like this. And he didn't want to refuse her. He wanted to give her what she wanted—he wanted to give her the world. He went back in, and his hand ended up high on her waist, just before the swell of her breast. He was hyper-aware of the proximity; fearing that if they didn't stop soon, he would take her right there on the spot, under the tree with their initials scorched into the base of it. This idea was, of course, grossly unjust, as she had no clue about the popularly called "Tier 15". However, her nails scratched at the nape of his neck beckoningly, and he slipped further into his lusty daze.

"FLAME PRINCE YOU BETTER GET YOUR FIERY HANDS OFF OF HER!" The lust-emboldened prince had the air knocked from him as he was thrown back and landed in a crumpled heap a few feet away from where he'd been. His sluggish mind struggled to process what had just happened while he stared at the stars.

"Cake?! What the junk?!" The blonde shouted, sitting up to fix her clothes and then dashing over to her fallen prince. "Are you okay?" she asked, looking down at his confused expression, a bit relieved to see him nod slowly. She stood protectively between him and the now blown-up Cake. She noticed the fur on the feline's paw had been singed abit from the contact. "Quit it you psycho!" Fionna growled at the feral cat attempting to lunge around her small frame.

"Fi-onnaa! He just—he was just!" Cake stuttered, claws still splayed. In response, Fionna blushed madly.

"I know! I was—I was there." She grumbled indignantly. Flame Prince sat up behind Fionna, flame burning brightly as he gulped in air and covered the front of his dress pants. Well this is embarrassing, he thought briefly. Coming back to his senses, he quietly summoned a Fire Lion, painfully aware that his time here was up.

"Well you should just get your little tail back in the house." The older feline said authoritatively.

"What the—? You think you can order me around? I can do whatever I want! I'm staying here!" The defiant adventuress yelled down at the shrinking cat. How could she try to order me around like that? Fionna thought in irritation. Who did she think she was?

"Not with him you're not!"

"Cake, you're not—!" Flame Prince watched them go back and forth in awe. Why did that stupid cat have to hate him so much? Didn't she know how unhappy it made Fionna? Lately, all they did was fight over him. That cat annoyed the living daylights out of him, and her interruption was NOT appreciated, but when Fionna defended him so proudly.. It was like someone had thrown some charcoal onto his heart, and his flame grew brighter. At that moment, he no longer cared that the cat hated him, as long as Fionna never did.

The prince rose slowly, the flame in his pants quite unceremoniously put out. He walked over to the duo, who had separated to about 4 feet apart. They screamed at each other and he shook his head slightly, watching the toxicity peak. He touched his love's arm, making her look at her look at him. He bent down to whisper in her ear.

"I should go. I'm sorry to cause so much trouble for you." He murmured, grabbing hold of her hand and squeezing it. "I'm so very glad you thought about this. To touch you is... amazing. I never thought I would be able to do this."

"Oh—no! Don't be sorry! Cake will come around eventually. You—you don't have to leave." She whispered back fiercely. "And.. Me too." She spoke shyly, beginning to blush once again.

FP smiled and kissed her ear. "She might, but not today, and that's alright, Fi. However, if things get particularly nasty, you could always come to the Flame Kingdom. Ya know, spend the night at the castle." His voice dropped lower. "I promise not to do anything too shameful, but now that I can finally touch you.. I don't know if I'd want to let you come back here." Fionna only caught the gist of what he was saying, but she felt like she fully grasped his meaning. Her breath caught and she blushed brightly, hand flying up to cover her mouth, much to FP's enjoyment. He quite liked teasing her.

"HEY! What're you telling her, you creep?!" Cake boomed from afar.

Flame Prince rolled his eyes and brought one hand up to her face and gave her a fleeting kiss on the lips, then one on the cheek. "Bye, my love." He murmured so only she could hear. Backing away and avoiding Cake, he soon faded into the night on the summoned Fire Lion.

"Fionna!" Cake stalked over to the momentarily dreamy-eyed girl. "Do you have a death wish or somethin'?!" Fionna turned to glare at her best friend.

"Oh please. We've been together two years, Cake. If he was evil, I'm sure I would've seen some evil-doing by now. Thanks sooo much for that, by the way." She stated dismissively.

"What if he's been deceiving you all this time?!"

"Man, that seems really tiring." Fionna quipped sarcastically, walking down the grassy hill to the door of their shared tree house and slipped in. She just wanted this conversation to be over. She was beyond irritated at the interruption, and didn't really feel like getting angrier. She didn't like to dwell on her feelings for her prince either, as they kept growing, confusing and scaring her. There's never been someone like him in her life before; someone she's cared this deeply for.

"Be serious, Fionna!" The blonde slammed the door, finally reaching her limit.

"Why?! This whole conversation is a flippin' joke! You have no reason to hate him so much! I can't believe you'd held on to hating him this much for soo long!"

"Oh no? Then I'm just imagining that little tantrum he threw when you guys first met?"

"Oh c'mon! He's apologized like a thousand times for that! And to be fair, we hurt him a lot that day!"

"Eviiiiilll~" The cat sang, boiling Fionna's blood even more. For the older sister, Cake could be extremely immature at times.

"You don't even know him!" The girl screamed, fists balled tightly, shaking violently. "I didn't fight you like this when you and Mono started getting serious! Why can't you just be happy for me?!"

"I only want what's best for you Fi," Cake reached out a paw out to touch Fionna, but she flinched away. The feline's face hardened and she crossed her arms. "Besides, Mono and I are in love. We have a family."

"Who are you?! Mom?! Who's to say that I'm not in—" Fionna clamped her mouth shut and felt her face get hot. Was she really about to say what she thought she was?

"Woah, Woah, Woah, Please don't tell me you were about to say that you loved that guy." Cake laughed incredulously. Fionna looked down miserably. Was she? Sometimes it was just so hard to think with the prince around. Even with him gone, she thought about him constantly. Even after two years, she never felt tired of him; even if they argued. All she thought about was him. Always. Was this love? Tears stung her eyes. She wanted nothing more than to ask Cake's advice. But she didn't approve of him, which only succeeded in making her more defensive, more angry-more hurt.

"Glob, Fionna! I know you're the last human and you don't know any better, but that is really stupid!"

"W—What? What does that have to do with anything? Why would you even—"She shook her head as tears spilled over and ran down her porcelain cheeks. "I'm not gonna listen to this anymore!" The young girl screamed venomously as she swiveled toward the door.

"Wait, Fi! That came out—Where are you going?!" The cat called to her, watching as she stormed toward the door.

"Take a guess!" She cried, slamming the door behind her and running off into the darkness.

OoO

"Oh, Fionna! Are you here to see the prince?" Fionna simply nodded quietly, watching the little flame creature move away from the door. "Well, I shall fetch him for you." The palace worker stepped out of the foyer and a few minutes later, she saw her boyfriend round the corner.

"Fionna? What're you doing here?" The doorman bowed and withdrew, giving the two privacy. "I was kinda joking about coming to the palace tonight.. I mean I'm so glad to see you, but is it okay that you're here?" The girl watched the palace worker retreat with emotionless eyes. As soon as he was gone, she slowly walked up to the prince, resting her forehead square in the middle of his chest, not uttering a word.

"Fi? Seriously, what's up with you?" He lifted a large hand to plop it on the top of her head, the other came to rest on her waist. He was still getting used to their contact.

Tears swam in Fionna's eyes. His soft hands, the kind tone of voice... this is the Flame Prince she was used to. Why couldn't Cake see him the way she always did? Why did she have to push so hard? Tears fell onto FP's chest as she silently cried.

"Ow! Hey, Fionna—" He pushed her back gently, finally taking in her damp face. His heart skipped a beat. "Hey, what—? Are you okay?" His eyebrows pinched together with concern.

"No, it's—" The blonde wiped her eyes furiously, attempting to stop the flow of tears. When she failed, she covered her face in shame. He didn't need to see her like this right now. Crying in front of him was something she tried not to do, because she didn't like how weak it made her seem. She wanted him to see her as someone who was strong, not a total crybaby.

Flame Prince leaned forward, capturing her blue-tinted wrists. "Don't hide from me." He said firmly, making her look at him. His maroon eyes burned into hers, and her knees weakened. She let out a choked-breath. She relented then, too distraught to act strong for him. She began to think right then that maybe she didn't need to.

"Are we doing something wrong?!" She cried, letting her emotions get the better of her for a moment. "People keep telling us that we're crazy. They're so against us! Your mom, Cake—Is it that bad? Is it wrong for us to be together? Is it wrong that I care this much?!" Flame Prince slowly lost his sanity, watching Fionna break down like this was too much for him to bear. He wanted to destroy those who'd made her feel this way, but more importantly, he wanted to comfort her. He tugged her close to him, only to have himself pushed away. Dread filled his heart and his grip tightened on her small arms. He hated, hated the feeling of her pushing him away.

"Don't." He whispered desperately, hoping she'd just let him hold her; now that he finally could. He'd never seen her so hurt, and his chest throbbed painfully at the sight of her.

"Why is 'us' causing me so much confusion? Causing so much problems? This hurts so much, but I still.." She sniffled. "The only thing I want... is you."

FP pulled her close and this time, she offered no resistance. He squeezed her small frame tightly, wishing for nothing more than for her tears to disappear.

"Fionna.." The young girl looked up and was immediately met with a soft kiss. She briefly wondered if she'd ever get used to the feeling. "Look- It doesn't matter what anyone thinks, okay? We have control of our own lives. We have the right to choose. And I chose you." She gave him a teary smile. He made her feel like it honestly didn't matter. Having him there... she almost felt like she didn't need Cake's approval; no matter how much she wanted it. She began to realize that she had to think of herself. She wasn't a child anymore, and she didn't need Cake to look after her so much. What he was saying was entirely

"You're right. To heck with them. I—I choose you too." He grinned softly, bringing a hand to the side of her face and leading her lips to his once again.

A/N: Oh man! My longest fanfic chapter to date! It took me days, and I'm finally finished and I have no words! Im in love! Please review! I'd love to hear what you think of my 2013 writing style! Thank you for reading! Until next time- Case