First I don't own Adventure Time; this is purely a fan-fiction. Secondly, this is a Bubbline/Marcibel ship fanfic, so yes Yuri is involved…quite a lot of it actually. Lastly, this is my first time writing a fan-fiction so leave ratings and comments please.

Chapter 1

PB's POV:
PB lay on the floor enthralled in her newest research endeavor— "Vampirism in a Nutshell". She earnestly flipped the pages of the book attempting to absorb all of the knowledge it contained. It wasn't like Bonnibel to look into such a distasteful topic, but then again she was curious, it was her trademark curiosity that caused her to hold such an interest. Her curiosity had been piqued indeed, and it all started when she began to spending copious amounts of time with Marceline. Marceline, the Vampire Queen, the name itself gave her an abrupt chill sending a shiver from the pit of her stomach down to between her thighs. She felt a pulling and tensing of muscles within her lower belly, she thought it distasteful that her body acted in such a manner at the thought of Marceline, but she would admit it she was completely intrigued with this vampire. Ironically the vampire was the sole reason for her research because she wanted to get closer to her, not in an intimate manner—though she didn't mind that—but a manner where the two could see eye to eye and be equal with one another.
PB looked over at the clock which read 12:45 AM. She stretched as a soft yawn passed her pink lips. It was getting late. She closed her book with a page-marker in place and set it down upon her desk—there'd be more time for research tomorrow. As she began her bedtime routine, she felt the room become eerily cooler. Not in temperature but in mysteriousness, as if someone was present who had not been present earlier. She looked around noting that nothing seemed different or looked out of place. She headed into the bathroom, turning on the shower and beginning to undress in front of a full length mirror. She removed her pink skirt and sweatshirt, revealing her taunt yet curvy figure clad in purple underwear.

She had never taken the time to appreciate her own body, but as she looked at herself in such a revealing state her reflection revealed an image of beauty and the suppleness that could appeal to anyone and make them absolutely lust driven. A thought came to her mind that before tonight she'd never actually considered—she'd never considered touching herself; but now she mulled over the thought. How distasteful she chided herself for thinking about such things. Despite her inhibitions her hand crept down to the swollen cleft between her legs. She cupped her throbbing sex through her panties and gasped as she felt how wet she was, he panties were soaked. She slowly crept the hand upwards and slid it into her panties and between massaging her swollen nether lips; while she did this her other hand worked her right breast, kneading and massaging it—it too then slipped under the cloth covering her body to tweak and pinch her nipple. A moan escaped her mouth as she watched herself in the mirror, her eyes were half shut and sated with lust and pleasure. She watched her fingers under the cloth as they moved between her lips rubbing the little nub that lay there. Another moan. This was so wrong but it was right. She loved how she was making herself feel. The she heard a loud, thud. The pink girl jumped obviously started and peered out the bathroom door into her room to see if anyone was in there. "Peppermint Butler?" she called out. No answer. She looked to her desk and noted that her book was now on the floor. It must have fallen off, she thought to herself. Bonnibel undressed and stepped into the shower and allowed the hot water and steam to drift her away from her consciousness and her thoughts, she reached a place of stillness and existence in her mind as she washed herself clean of the stresses of today.

Marceline's POV:
She'd been there long enough to see her reading. Lurking was her thing, but she especially loved spying on the princess when she was in her most private of moments. It always had thrilled her but this wasn't just any lurking or spying, it was hunting. Hunting for what? Not food, she wasn't hungry, although she'd considered draining the pink girl of some of her color on occasions even now she watched as the pink girls face blushed obviously from the material she was reading or a maybe a thought. Was it a thought about her? She watched as the girl got up. The vampire had been inside the room for quite a while. She came through the balcony door which was kept ajar on warm nights such as this. She watched the princess look around—Marceline was invisible but she knew the pink girl felt her presence there. She wanted her to. She wanted her not only to feel her presence but to feel her, to feel her longing.

She watched as the princess went into the bathroom followed by the sound of a running shower moments later. Something in Marceline wanted to draw near to the girl, but what. Marceline knew just as any other half demon knew she was just in denial. She knew in her subconscious that she was attracted, not just physically but on a deeper level. She wanted the girl. She wanted her to herself. She began feeling the feral notions of aggressive possession seep into her undead veins. Marceline picked up the book PB had been reading and read the bright read letter from the cover, "Vampirism in a Nutshell". A sly grin played upon the grey girl's face. "Tsk, tsk, tsk Bonni. Always so curious," she said aloud to herself. She put down the book as her attention was caught by a soft moan coming from the bathroom. She now grinned wider exposing her sharp white fangs.

She couldn't believe her eyes, her Bonni was standing there half naked with one hand tucked inside her panties feverishly stroking away, while the other toyed with her perfectly round breast slightly pinching her nipple. Marceline was now in a undeniable state of lust from this view of the pink girl. Her pink eyelids fluttered open and shut in response to her own administrations on her own body, the girl's body appeared to be sated with lust and pleasure. The vampire intently watched the girl continue to rub herself into bliss entranced by the blush that settled over the girl's body. Marceline licked her lips, she wanted to taste the girl, not only drink her red but taste the sweetness that lie between her legs.

She couldn't let her continue, she needed her to be begging...wanting. Marceline knocked the book off of the desk hoping to break the princess from her pleasurable reverie. The pink girl jumped with a start then looked out of the bathroom to see if it had been anyone inside the room, she called for the butler thinking he had been in the room, no answer. The vampire smiled.

All the time the vampire had been watching the girl undress in the bathroom and get into the shower. Marceline unable to control herself followed her in. She watched that magnificent body glistening under the steady stream if water. She's mine, was all she could think.

PB's POV:
"Ahhh," Bonnibel moaned, not sure if it was the relaxing water that got her to this state or the slight pangs of pleasurable pain she had to begun to feel in her nipples caused by what felt like a hand. A hand...What?! Something had just grabbed her breast and she saw nothing, but she felt it. Oh, she felt them kneading and pulling. "Mmm," she let the sound slip. She was too aroused to attempt to resist what was happening she batted her eyes shut enjoying what felt like hands as they moved about her breasts then traveled south. She looked down and that's when she saw familiar grey hands. Her breath caught in her chest then she whispered, "Marceline..." as a hand with deft and challenging fingers slid between her legs rubbing the pink girl's moistened folds.

"Hmm?" the vampire said dreamily overcome by desire as she kissed the pink girl's skin, sliding her fingers down the pink slit then up rubbing the girl's most sensitive area causing her body to flex and spasm quickly due to sensitivity. "Ohhh," she moaned desperately as Marceline then slid two fingers into her slowly as she felt resistance. A sly smiled played upon her lips. Her dear Bonnibel was still a virgin. She had waited for her, and this excited the aroused vampire even more, adding to the moisture growing between her own legs.

Bonnibel's face went a deep shade of red when she then realized why the vampire stopped and she thanked Glob the vampire was behind her so that she couldn't see the embarrassment written on her face. Suddenly she felt two long slender fingers thrust into her quickly pushing past the resistance. "Marci...mmm...Ahhhhhh!" she moaned almost unintelligibly and loudly into the tiles of the shower as she attempted to hold herself up. She hoped to Glob that Peppermint Butler was asleep, the thought of him catching them made her even more aroused as Marceline continued on with her administrations. Marceline moved her fingers in and out of the girl at a relentless pace, causing the girls knees to buckle as she weakened from the pain and pleasure of it all. The vampire stopped all movement of her fingers holding them deep inside of the girl clearly teasing her as she slowly pulled them out of the pink girl. Bubblegum whimpered as she did so, clearly on edge. Marceline took her fingers and rubbed Bubblegum's clit in agonizingly slow circles, which to the now quivering pink girl was more torture than pleasure. She wanted release, she needed it—she needed her to give it to her.

"M-Marceline..." she panted.

"Yes, Bonnibel?"

"P-ple...ase..." Bonnibel sounded so little, so submissive, so needy—so much so that she didn't even recognize her own voice when she spoke.

"Please what? What is it Bonni?" Marceline whispered in the girl's ear in a low seductive tone that sent a shiver down the girl's spine.

"I...w-want..mor—" she began the last part fading off into a fit of moans of extremely pleasure and pain as Marceline pinched the pink girl's clit between the pads of her thumb and index fingers massaging the little nub between the two fingers.

Bonnibel found her words again, "D-don't stop...please...DON'T..." she moaned aloud to the vampire. The vampire smirked at this and continued on with her onslaught to the pink girl's pearl.

Marceline then dipped her fingers down returning them to the princess's waiting entrance. She liked how Marceline's skilled fingers roughly assaulted her insides coercing them to contract in the most delicious of manners. Marceline's other hand squeezed the pink girl's breasts and pinched her nipples roughly tweaking and pulling them, as she continued to kiss the pink girls neck she bit her hard and began to drain some of the color from the girl. Bonnibel moaned and screamed undiscerning things to the vampire girl frantically grasping for something, anything. That's all it took for PB, she was coming and coming hard. Her head seemed to swim amongst the stars and she became weak riding out the orgasm as the vampire continued her onslaught on the pink girl's body ravishing her.

Marceline slowly rubbed the girl's over-sensitive area as she calmed down from her first orgasm. She then turned PB toward her and kissed her with ferocity. Bonnibel tried to catch her breath as Marceline seemed to kiss it away. Breaking the kiss Marceline spoke to Bonnibel in a seductive tone, "I'm not done with you, yet." Bonnibel looked into the vampire's half open eyes heavy with lust and felt again the tension in the pit of her stomach, pleasurably painful.

*A/N Leave Comments and Reviews and I'll continue this.