Chaper 1: The First Step To Solving A Problem Is...

"Spike... What book is this?"

"Uh..." Spike looked over the book nervously. "Theorems Of Medical Magic?"

"Yes. And what book did I ask you to get?"

"I... I dunno... It's really late Twilight, I'm not-"

"Whatever. It's fine."

Twilight puffed out a moody breath of air and stuck her face back into her book. An awkward silence hung over the room for several seconds.

"Twilight... What's gotten into you lately?"

"What's that supposed to mean? Are you implying that something's wrong with me?"

"Wait, what? N-no, no!"

"That's what I thought." Twilight replied as passive-aggressively as possible.

She got up and strutted her way over to the bookshelf with the book that Spike had picked up by accident. Her facial expression wasn't far from par, but the way she slammed the book back into its rightful shelf was a bit alarming.

"Twilight..."

Spike cautiously made his way towards Twilight, ready for her to lash out. Instead, however, she dropped her books all at once and dashed up the stairs towards her bedroom.

"Twilight, wait!"

Spike's attempts for calming her down fell short of her earshot. By the time he got his last syllable out of his throat, Twilight's door to her room had already slammed shut.

Spike lowered his eyes and exhaled heavily. "Whelp... Here we go again."

As if going through a routine, Spike slowly made his way up the stairs, not minding the one step with the faulty support that squeaked loudly when he walked over it. He would typically try to avoid it, but his mind was too focused on Twilight to care. He reached on his tip-toes in order to reach the doorknob.

"Don't come in!"

Spike ignored her and turned the doorknob anyway. He entered Twilight's bedroom and immediately saw Twilight lying face down on her bed with her hands crossed over her head.

"Twilight, you've been like this for days now... Maybe you should-"

"I'm fine..."

"You're obviously not fine, Twilight. I've known you all my life and I know that this isn't you. Come on..." Spike hopped up on the edge of the bed and looked over at her with concern in his eyes. "Talk to me."

The terrible feeling of watching herself become something that she worked so hard to fix filled every nook and cranny of her conscience and it didn't take her long to bury her face back into her hands. She was definitely aware of how she was acting, but as Spike was starting to find out, there was no spell, potion or remedy that made it any better. Twilight rolled to her side on the bed towards spike and pulled him close to her chest, hugging him tightly and lightly sobbing into his scales.

"Spike, I'm so sorry... I don't know..." She sniffed. "I don't know what's going on with me..."

Spike smiled slightly as he enjoyed the first hug he received from Twilight in weeks. Judging from her emotional state and her tears soaking the bedsheets, he knew that it wasn't her fault.

"S'okay... but you should seriously consider writing to Princess Celestia about this. I hate watching you tear yourself up from the inside out."

"But Spike," She turned Spike around so that she was looking at him straight in the eye. "That's just it... I don't know what's going on!"

"Maybe there's a book-"

"I've already researched it extensively, trust me. It's nothing to do with hormones or... Periods..." Twilight cringed at the word. "It's something completely different."

Spike sat back up and brushed Twilight's hair from her face. Granted, it was a bit more affectionate than necessary, the relationship between the two had often allowed for the occasional gesture of loving friendship. He didn't speak, but instead let Twilight think it out in her head, since that was usually what led to her problems being solved the quickest.

After frying her brain several times trying to come up with the ever-elusive answer, Twilight sighed in defeat and rolled onto her back.

"Spike, take a letter." The quill and paper were already in his claws by the time she finished her sentence.

"Ready!"

"Dear Princess Celestia,
I'm sorry to bother you with such a trivial matter, but I must ask for your help.
I have been feeling stressed, irate, and easily annoyed as of late. It is also becoming increasingly difficult to concentrate on studies.
I have tested and researched what the source of these feelings might be, but none of my books help. I have eliminated many possibilities such as menstrual cycles and-"

Spike broke Twilight's concentration with a (not quite well enough) surpressed chuckle.

"Oh, grow up... As I was saying-"

"Menstrual cycles and other similar causes. If you have any idea what could be the problem, please respond as soon as you can.
Your faithful student,
Princess Twilight Sparkle"

"Uh-huh... Aaaand... Done."

Spike finished scratching the last few letters onto the paper and sent it away just as quickly as he summoned it.

"Oh Spike... What am I supposed to do if she doesn't know? How long is this going to last?"

"Here we go... Again..." Spike knew Twilight's frequent habit of magnifying the worst case scenario even when she was about to receive help.

"What if it gets worse? What if I turn into a crazy cat lady?! Or..." Sadness came back into her eyes. "What if it causes me to drive my friends away..."

"Twilight, calm down! None of those things are going to happen. Just take a deep breath and- *BURP!*"

Spikes consolation was abruptly interrupted by a puff of green fire coming from his mouth, along with a medium sized box that nearly smacked Twilight square on the forehead. Instead, it landed next to her on her pillow.

"Ahhh! Spike!"

"Hey, it's not my fault! Although, that was a rather quick response from Princess Celestia, especially considering how late it is."

Twilight flipped around to her side and turned the box over several times. However, there were no latches or buttons anywhere on the box to open it. The box itself wasn't all that spectacular, but it was quite heavy. Whether it was the box itself that was the cause of the weight or whatever was inside it remained a mystery.

"How am I supposed to open this thing?"

"Heck if I know. Maybe it's some sort of test from the Princess." Spike stood back and watched as Twilight pointlessly tried to poke and pull at the box.

"Wait, there's something written at the bottom..." Twilight squinted her eyes and held the bottom of the box close to her face as she tried to read the tiny script.

Be honest about your desires, and you will find what you need.
~Princess Luna~

Twilight raised her eyebrow in confusion and then read it again, aloud this time, for Spike. The writing itself wasn't what intrigued her most, it was the fact that the box belonged to Luna.

"What is that supposed to mean? And why is this from Princess Luna?" Twilight pinched her temples with her thumb and index finger and sighed out of frustration. "Sometimes I wish they would just tell me what I need..."

"Well..." Spike picked up the box and examined it. "It said that you should be honest with your desires. Are you hiding something?"

"What? No! I would never lie to you, Spike. I honestly have no idea what is going on with me..."

"Okay... Maybe we need to find out, then?" Spike gave up on the box and put it back down on Twilight's bedside table.

"What do you mean?" Twilight sat back up and hung her legs off the side of the bed.

"I mean maybe we should do some tests to see what this "desire" you have is. If we try out enough things, maybe we'll get some sort of reaction."

"Good idea, Spike. Go get our lab checklist and meet me there in five."

Spike gave a stern salute. "Roger!"

There was a slight nip in the cool late afternoon air which was multiplied by a stiff northern wind coming from Canterlot. It wasn't cold enough to snow, but it was just a few degrees above freezing. Rainbow Dash would've decided against her late night fly if it weren't for the beautiful full moon brightly illuminating Ponyville below, as well as the few clouds that lingered overhead.

She soon realized that the cold was easy to combat as long as she kept her wings moving and her body temperature up. The strong muscles between her back and the joints of her wings were producing plenty of heat. However, her nose, her fingers and the tips of her wings were starting to feel the adverse effect of the night's chill. Even though the night was very beautiful and peaceful, she knew that if she kept flying for another few minutes, she wouldn't be able to feel her extremities anymore. Rainbow Dash looked to the ground to find some place to rest and warm up for a while. It was a bit difficult for her to scan through Ponyville since all of the lights in the houses were off. Even the bright moonlight didn't help much.

Just when she was about to give up and retreat back to Cloudsdale for the night, a tall oak tree entered into her peripherals that stuck out from the rest of the houses in the dimly lit town.

"Maybe Twilight has some hot chocolate or something..." Rainbow Dash angled her aileron feathers downwards and dropped into a sharp dive.

Twilight stripped off all of her clothes except for her panties and bra. The purple plaid skirt fell limp on the floor, which was soon followed by her plain black thin strapped tank top. She took off her thigh high stockings for good measure, even though it wasn't necessary. She was left standing there with nothing but her purple striped panties and a cute matching lacey strapless bra that was a bit too small for her.

Spike started to hook up the electrodes to Twilight's chest, but paused for a second when he realized that he'd have to reach uncomfortably close to Twilight's breasts. Spike's face reddened a little when he went to attach it.

Twilight's tits weren't bad. They certainly weren't as flat as Rainbow Dash's, but they weren't nearly as plump as Fluttershy's. They had a good shape to them, as well as tiny perky nipples that were barely visible through her bra. Spike knew he was staring at them for too long, but either Twilight didn't mind or she didn't care.

"Uh... I, uh..."

"Oh for Luna's sake, Spike..." Twilight snatched the device from Spikes claw and quickly attached it right above her left breast. "They're not going to bite or anything."

"That's not what I'm worried about..." Spike reached down and shifted his pants a little.

"What are you talking about?"

"I-it's nothing..." He finally tucked his shaft in a safe place so that his hard-on wasn't as visible. He felt guilty for getting a boner from the girl who was basically his sister. However, Twilight's exposed body was too much for him.

"Ugh... whatever. Just start the darn machine already."

"You're doing it again..." Spike said innocently as he walked over to the machine hooked up to the electrodes and turned it on.

"Oh... S-sorry..."

The machine hummed loudly after Spike flipped the switch, and various colored lights flickered on and off.

"Okay. So, I'm going to hold up some pictures and say some words, and I'll let you know if the machine picks up on any unusual readings."

Spike took out his picture book and sat down in the chair opposite of Twilight.

"Okay here we-"

Spike was cut off by the faint sound of the front doorbell echoing from the living room.

"UGH! Are you serious?!" Twilight tore off the electrodes from her skin and threw her tank top back on, along with her semi-short skirt. She stumbled and hobbled on each leg as she slipped her stockings on.

"Calm down, Twilight. It's probably just a door to door salesman or something."

She looked over at the wall clock that hung over her lab door. "A door to door salesman at ten PM?"

Another ring at the doorbell.

"Okay, okay! I'm coming!" Twilight jogged down the flight of stairs and into the living room.

Twilight's door didn't have side windows, so she couldn't see who was outside until she unlocked the deadbolt and opened the door.

"Sup?" Rainbow Dash made her way in the second the door opened.

"Oh! Hi, Rainbow!" Twilight smiled as she walked in. The fact that a smile came to her face was more surprising than her friend's unexpected appearance. "What brings you way out here this late at night?"

Rainbow walked past her quickly, but it was just enough to give Twilight a slight whiff of the strong smell of a good workout. It wasn't body odor, but a certain moist scent that was given off during physical activity. Ordinarily, she wouldn't have minded and probably would have cringed a bit. However, to Twilight's surprise, it actually attracted her a bit. She had no idea why.

"I was just doin' my nightly fly and I got a little chilly."

Another thing that surprisingly attracted Twilight was what Rainbow Dash was wearing. Even though she was one of her best friends and the idea of physical attraction never quite crossed her mind before, she couldn't lie to herself. Her body was quite pleasing to the eye in many ways. She was wearing a pair of tight blue workout shorts and a slim yet supportive matching sports bra that complimented her toned body quite well.

"Hey, do you have hot chocolate or coffee or somethin' anywhere?" Rainbow dash looked through the cabinets in her kitchen without asking permission, which annoyed Twilight a little. However, she chose not to say anything about it.

Before running the risk of Rainbow catching her stare, Twilight shook herself out of the trance. "Y-yeah... I think I've still got some." She stepped into the kitchen and began heating a pot of water with her magic.

"Sweet. So what have you and Spike been up to?"

Twilight glanced over at Spike with a look of uncertainty as she got out the mugs. Spike gave her a reassuring nod.

"Well... We've actually been pretty busy. I haven't been feeling well lately and we're trying to find out why. I even asked Princess Celestia and that... Didn't help much."

"What'cha mean not feeling well?"

"It's hard to explain, but I've just been feeling moody and stressed out lately."

"What about?" Rainbow Dash made her way back into the living room, vaulted over the back of the couch, and landed on her back in a reclined position.

"That's the thing. I have no clue!" Twilight groaned softly and finished making the hot chocolate before putting the mugs on a tray. She walked into the living room.

"Princess Celestia sent us some kind of box that might help her out, but we have no idea how to open it." Spike leaned over the back of the couch that Rainbow Dash was lounging on and rested his arms on it.

There were several seconds of silence as Rainbow Dash rubbed her chin and thought to herself. Her eyes fixated on the coffee table in front of her as she took a small sip of hot chocolate.

"How long's it been since ya got laid?"

Unfortunately for Twilight, she was mid-sip when the sentence hit her ears. Her eyes widened and she nearly choked on the hot chocolate as her cheeks turned rose red.

"Excuse me?!"

"You know... When did you have sex last?" Rainbow giggled a little at Twilight's embarrassment.

"Rainbow!"

"Come on! A day? A week? A year?"

Rainbow sat up and leaned forward in the couch. Her legs weren't spread wide open, but they were just wide enough for Twilight to steal a quick unintentional peek at her slight bulge in between her thighs where her vagina lay. Cursing herself for being so crude, Twilight darted her eyes away from the potential eye-candy. The redness of her cheeks didn't diminish at all.

"I... I'm still a..."

"Say wha? You gotta spe-"

"I'm a virgin, okay?!" Twilight slammed her hot chocolate down on the table, which almost caused it to break. "Geez..."

"Well, I can't say I'm surprised, but-"

"What's that supposed to mean?" Twilight eyed Rainbow with a raised eyebrow, but then broke her aggressive tone and closed her eyes. "I'm sorry, Dash... I didn't mean to snap at you..."

"S'aight. But I think we both know what your problem is now. Heheh."

"You really think that's what's wrong with me?"

"That's what it sounds like to me. And trust me, I've had my fair share of horny mood swings. Everyone knows if ya don't get laid often enough, ya get cranky."

Twilight was about to protest to Rainbow using such lewd language again, but she stopped herself and looked down at the floor as she thought to herself. She hadn't quite thought about it before, but even she couldn't deny that sexual frustration and hormones might be at play here. She couldn't imagine herself taking part in such raunchy behavior, and who she could possibly do it with was another matter altogether. Try as hard as she could, Twilight found herself unable to logically reason her way out of this one for some reason. Her brain wasn't thinking the way it normally did, which was apparent to everyone but herself.

"What should I do? I don't know the first thing about... sex. Besides, I don't know anyone who would want to do it with someone as inexperienced as me..." Twilight felt extremely awkward since this was the deepest she had ever gotten into the subject.

"Hmm... You're probably gonna be really tight so Big Mac wouldn't work for obvious reasons." Rainbow continued on, surprised that Twilight hadn't already struck down the idea at this point.

Twilight's face got redder and redder as she listened to Rainbow talk so openly. However, she didn't stop her. There was something about the way she said those naughty words and phrases that made Twilight want to keep listening.

"That is, of course, assuming you'd want to do it with a dude."

Rainbow Dash gulped down the last of her hot chocolate with an *ahhh* and then put her arms behind her head, leaning back into the couch and keeping an eye on her friend. If she didn't know any better, Twilight would've thought that Rainbow Dash was checking her out a little since her eyes were sometimes drifting downward away from her eyes and onto her chest and legs.

"I... I guess it doesn't really matter..."

Rainbow's face suddenly lit up. "Wait, what? You mean you're into girls too?!"

"Um..." Twilight's eyes escaped Rainbow's by looking left and right. "I guess? I don't know..."

"Oh come on, stop beating around the bush! Do ya like girls or not?" Rainbow leaned in closer and closer to Twilight's face with a huge smile.

"Rainbow, I think that's enough." Spike finally cut her off before she caused Twilight any more embarrassment.

She leaned back away from Twilight and sighed. "Okay, okay. Fine."

Rainbow got up to put her cup away, but took the route behind Twilight's chair on her way there. While passing her, she bent down and got close to Twilight's ear before whispering just quietly enough for Spike not to hear.

"I could help you out with that, if you wanted..." She whispered in a semi-seductive tone and dragged the tip of her finger along the underside of Twilight's chin, which made Twilight's body shiver in excitement.

"D-Dash..." Twilight bit her lip hard and shuffled her legs uncomfortably as a certain heat began to grow between her thighs.

"Just sayin'." Rainbow giggled at Twilight's reaction.

"I... I can't."

"Aw, why not?" Her tone wasn't filled with concern as much as it was filled with disappointment.

"I just... Can't..."

Twilight knew now what the burning in her lower body was and what it meant. She knew that her sexual appetite was at its maximum threshold, but she was filled with so much doubt and nervousness that she couldn't imagine herself pleasing those appetites. She had certainly read about lesbian sexual behaviors in one or two of her books, and the temptation of trying it out had been in her subconscious for years. All it took was a tiny hint from Rainbow to bring those temptations to the surface, and her body was now feeling the intense ramifications of a ravenous sexual hunger towards Rainbow Dash's intimate offer.

Her conscience was at war with itself. It was rationality versus hormones.

"Well, I'll let ya think it over. I gotta jet before it gets too late. Thanks for the drink!"

Rainbow turned and put the empty cup back on the coffee table. As she made her way to the front door, Twilight's eyes magnetized to her firm, athletic butt that swayed back and forth slightly as she walked. The curve of her cheeks as well as her upper thighs were easily visible through her tight short shorts. Twilight's heart nearly jumped out of her chest.

"U-uh..." Twilight blurted out clumsily. Rainbow turned back around right as she was about to open the front door.

"Yeah?"

Her better judgment caught a hold of her and she retreated back into her seat. "N-nothing... I was just going to say to stay warm."

Rainbow smiled back at her. "Will do. Seeyah, Twi."

The door slammed shut, which was shortly followed by fast paced footsteps and a *whoosh* from her taking off into the chilly night sky.

"Gosh, I thought she'd never stop with that. Can you believe how ridiculous that girl can be sometimes?" Spike huffed and puffed and took the tea cups into the kitchen to wash them.

"Yeah... Ridiculous..." Twilight laughed nervously.

Trying to make her body calm down from the recent stimulation, she gulped down her hot chocolate which was lukewarm by now. A large sigh escaped her chest before she rose from the chair.

However, a strange feeling resided in between her legs when she rose. It was... Wet. Soaking wet. Thin strands of her sexual fluids stretched from her panties all the way back to the cushion that she was previously sitting in, where a rather large damp stain had developed. Twilight's eyes narrowed in shock as she quickly reached for a nearby towel with her magic. She scrubbed the spot furiously to try and get the stain out before Spike saw.

"You alright in there?" Spike called out behind the clanking and clattering of the dishes.

"Uh, y-yeah! Heheh... Just spilled some hot chocolate..."

She finished cleaning the stain as fast as she physically could and quickly retreated upstairs. Spike either didn't notice from the random noises of the dishes being washed or didn't think it wise to stop her. She skipped every other step with long strides as she quickly made her way up the stairs. She nearly tripped over herself making the sharp right turn at the top of the stairway, but caught herself on the wall next to her with her hand. Before she could drip another drop from between her legs, she dashed into her bedroom and used her magic to instantly lock the door behind her. Once inside, she put her weight back against the door, letting out a sigh of relief before sliding down the door on her back until she was sitting down.

She looked down at her body. Her chest was rising and falling fairly quickly; not just because of the short sprint she had just performed, but mostly because of the heated state that her body was in. The throbbing and burning between her legs hadn't gotten any better and she could feel her moisture cool her skin against her inner thighs. Making sure not to make a lot of noise, Twilight slipped off her skirt. She was almost afraid to see what was beneath them. What she found was worse than she imagined.

Her panties were soaked. They weren't just soaked, they were dripping wet onto the carpet beneath her with every passing second. This wasn't the first time Twilight had to deal with a situation like this, but this was definitely the worst case of it by far. Instead of taking her underwear off, however, she kept them on and took in the sight for a second or two.

A hand slid down her belly over her tank top gently as Twilight cautiously began to investigate curiously. Her breathing was extremely labored and heavy by the time her finger got to her panties. She moved lower and lower until she began to feel the wet spot. Her hand pulled away and left a thin sticky line of juices in between her pussy and her finger which, oddly enough, didn't gross her out. It instead tempted her other hand to go lower... Lower... Lower still...

"Ahhhn..."

Twilight had forgotten how sensitive her clit was, especially when it was horny and swollen like it most likely was now. Her finger barely brushed the slight bump in her panties that her pleasure node made, but it was enough to extract a decent moan from her. Twilight couldn't stop there if she tried. Not after that intense stimulation. Her desires were too inflamed at that point. She slid her panties down her thighs, making more stringy fluids between them and her pussy, until they joined with her skirt that was already at her knees. She then flung them both aside with one of her legs.

Her sexually starved sex was exposed to the open air and Twilight's hands slid between her thighs sensually as she felt all of her natural lubricant that had accumulated and dripped down her legs. Not willing to tease herself any longer, she slid a finger gently up the center of her slit until it made contact with her clit again, sending a chill up her spine and a strong tingle in her hips from her sensitivity.

"Mmmphh... Oh sweet Celestia..."

She bit her lip and kept dragging the tip of her finger across her opening, making her throbbing more and more intense. The burning between her thighs only got higher and higher. Her hand gradually sped up and eventually started to rub over her clit along with her sensitive inner lips. Due to how sensitive she was, she was already feeling pressure from (what she guessed was) her upcoming climax. The carpet beneath her ass soon became just as wet as her underwear from how much she was leaking from her virgin pussy. Twilight stopped to catch her breath and pulled her soaked fingers away.

Three loud knocks came at the door, causing her to jump and nearly have a heart attack.

"W-what?!" She raised her voice even though she was right up against the door with Spike no more than one foot away from the other side.

"S-sorry, I was just hearing some weird noises from in there and..."

"I'm fine, Spike..." Even with her best effort, Twilight couldn't suppress her heavy panting.

"Oh..." Well, alright. If you say so... I'm heading off to bed. I hope you feel better soo-"

"W-wait..."

Twilight slowly got up from the soaked floor, being careful not to slip in her own juices. Her heart was beating a million miles per hour; not just because of what she was doing only seconds earlier, but also because of the insane idea that was inside her mind at that moment.

She unlocked the bathroom door and cracked it open slightly, looking out of it and into Spike's only visible eye. It took her a while to search for the right words to describe what she was thinking, and she almost talked herself out of it twice within that five second time period. But, as her cunt continued to throb tremendously, she knew that she wouldn't be able to survive another minute without something; anything.

What she was thinking was borderline insane compared to the Twilight that Spike knew. However, it wasn't Twilight who was doing the thinking.

"C-could you send another letter for me?"

"Sure. Who to?"

"Rainbow Dash..."

It was her hormones.

Author's Note

I know this chapter didn't have sex, but don't worry! This fic isn't over yet! There's still tons of naughty juicy sex to go around! Be sure to stick around to find out what happens~
P.S. I know a lot of people will be confused since I usually write in regular pony anatomy, so I'll explain. This is anthro. That means that the characters retain some pony-like qualities (unicorn horns and such), but otherwise resemble a regular human. The same goes with spike as well. Just wanted to clear that up.

If there are any grammatical or spelling errors, please send me a PRIVATE MESSAGE and let me know so that I can fix them asap. Thanks for reading! <3
~Canadianbrony91