TwiSpike

by Regis-Th3-Lesser

Rating: mature
Tags: Slice of Life, My Little Pony: Friendship is Magic, Romance, Spike, Comedy, Sex, Twilight Sparkle
Length: 4580

Once again, Spike being Twilight's one and only assistant, gives into one of her crazy experiments.

After a long day of running around Ponyville, Spike expects to come home and relax, but Twilight has other ideas. After using a spell to change him into a pony their night and relationship change forever.

Cover by: EeveePikachuChan

Published 2015-05-21 20:20:01 UTC
Last updated 2015-05-21 20:20:01 UTC

One love, One house

One Love, One House

“Twilight, I'm not doing it...” Spike crossed his arms in protest. It was late. Spike had been all over Ponyville running errands for Twilight and whoever else asked for assistance.

“Come on, Spike. It isn't nothing more than a simple transformation spell,” Twilight pleaded with innocent eyes. Spike wouldn't break so easy. “Pleeease?” Twilight began to pout, Spike still wouldn't budge. Within less than a second Twilight concocted a clever plan.“Okay, Spike I'll let you sleep, but I need you to get me that one book on pony anatomy.”

Spike lowered his arms. “Sure, why?”

“My horn has been feeling a little weird lately, I want to make sure it isn't anything serious.” She rubbed her horn to elucidate her point. Spike quirked a brow, bringing his arms back up to his chest.

“And you were going to do a spell on me, knowing that your horn feels weird?” Spike protested.

“Please Spike, it's starting to tingle.” With a sigh Spike snailed his way to the the bookshelf housing Twilight's book. Little did he know, Twilight played him right into her plan. She waited like a Timberwolf stalking it's prey. He climbed up the ladder, she assumed a wider stance. He searched for the book, she steadied her aim.

“Got it!” In less than a second a magical beam shot out from Twilight's horn enveloping Spike in a magenta aura. Soon only his silhouette was visible in the thick fluctuating haze. First his legs grew longer, then his body elongated and slimmed out. His arms were next, changing from stubby stems into thick legs. Finally, his head became larger as he developed a longer snout. Then *boom*. A muffled blinding explosion dominated her vision. Moments later, amidst the binding light, the shape of a unicorn appeared.

“Oh, man,” Spike groaned. “Twilight, what did you do?” he slurred. Twilight could not find the right words. Here Spike was...a pony. The spell worked perfectly! She didn't know whether to jump with joy or work on writing a worded apology. “Twilight?” he asked, his voice low and resounding with worry. “What's wrong with my voi–” he lifted what used to be his claws into view “–aaaaaaahh! What did you do to me?!”

“Wow, the spell worked better than I thought,” Twilight spoke in a soft monotone manner.

“What?! You used the spell on me, why?!” Spike whined, his voice cracking slightly.

A wry smile donned her lips. “I didn't know it would work!”

Spike's eye began to twitch furiously. Nothing in the whole world could compare to the raw anger he felt now. His horn began to glow emerald green. “I said I didn't want to be turned into a pony! But, no! You just had to satisfy your curiosity! Why don't you ever listen to me?!” The more he vented, the brighter his horn became. “I see how you treat me now... I'm nothing more than a whipping colt to you! I'm just somepony you can push around like some sort of personal slave!” With that final outburst a jet of magical fire shot out from his horn directly at Twilight.

She had less than a second to react, and only two options were available. One, she dives out of the way and risks burning the library down. Two she surrounds herself in a shield whereas only some of the library is singed. A fraction of a second later she surrounded herself in a protective bubble. On the inside all she could hear was the muffled roar of raging flames threatening to consume her. She was worried about her life and Spike's not too mention the library's structural integrity. Then, as soon as it started it ceased.

She spotted Spike sitting in the same spot gasping for air. The outburst put a strain on his newfound horn causing a pounding headache. She burst through her bubble, lunging to Spike's aid. The moment she left the protection of the bubble, a sharp scent of slightly charred wood attacked her nostrils. But she payed no mind to that, all she wanted to do was make sure her assistant was okay.

She approached him carefully, taking note of his still glowing horn. “Spike, are you okay?” He looked up to Twilight, tears began to trail down his face, rolling over the purple fur under his eyes.

“I'm sorry,” he sobbed. “I didn't mean to get so angry. I just...” Twilight took him in her arms, holding him closely as he broke down.

“You don't need to be sorry, it's all my fault. I shouldn't have done the spell on you. You told me you didn't want to; I didn't respect your wishes,” she cooed as a mother would to her child.

“I shouldn't have lost control of my temper...”

“No, no, no. You had every right to be angry.” He buried his head into her chest to muffle his continued weeping.

“If you want, I can change you back.” Spike could feel the sincerity in her voice. She spoke so smooth and calm. There was something about her voice that made him feel safe and secure.

“I-I would like that,” he sniffled, muffled by her fur. Twilight released her hold on him and went in search of the book. She tried to remember where she had set it, but it was nowhere to be found. Then the realization hit her like a stampede. She left the book on her work stand which was next to her when Spike had his outburst. She whipped her head around, hoping that the book had survived the ordeal: her hopes were crushed. There it sat open on the stand, some parts riddled with orange hot fire worms burrowing underneath, eating away at the knowledge.
“No...” The page that she had learned the spell from was gone, nothing left but a charred pile of soot and ashes. She looked back to Spike who was wiping tears off his face. How am I going to tell him? With a heavy sigh she called to him. “Spike...” He looked to her. “I... I'm sorry Spike, you burned the book when you lashed out...” Even from a distance she could see the life drain out of his emerald eyes. “And I never studied the counterspell... ”

Spike sat, dumbfounded by what he had just been told. There was no way to change back to normal. Here he was, no longer Spike the Dragon, now he's Spike the unicorn. He wanted to cry, but no more tears would flow. He wanted to yell, but he remained mute. “So... I'm stuck like... This, forever...?”

“No, not forever. There bound to be another copy of it somewhere.” Twilight began to search frantically.

“Twilight... That was our only copy,” Spike responded, his voice low and dreary. One part of him wanted to attack Twilight and force her to change him back, and the other wanted to roll up into a ball and lie in a corner.

“Spike...?”

No response...

“Spike...” she sounded more authoritative now, but still no response. Talking to him from a distance wouldn't work, she had to get closer in order to get through to him. She calmly approached him, the library can't take another rage fueled inferno. “Spike,I...I'm sorry... I shouldn't have changed you without your permission.” She lowered her head, prepared to take the full force of his rage, instead she felt a shaky hoof on her head. In front of her stood Spike struggling to keep his balance.

“It's-s o-whoa, okay... ”

“Are you sure? You seemed very upset about it.”

“Y-yes,” —he fell over with a loud thud— “how do you ponies stand with only three legs? It's impossible... ”

“Years of practice, you'll learn how to do it.”

“If I stay like this long enough...”

Twilight felt a twinge of anger spark deep in her stomach. “What's so wrong about being a pony?” she masked the growing animosity in her tone.

Spike knew her all too well; he knew he'd struck a nerve. “I uh, there's nothing wrong with being a pony...I liked me like...me. I know you wouldn't want to be a dragon.”

“Actually, I wouldn't mind it at all. It could be an excellent opportunity to learn about dragons!”

“You use everything as an opportunity to learn...”

“Because it is, now stand up.”
He Leaned forward and pressed his front hooves on the charred floor. Unsteadily he rose, his legs shaking and buckling every inch he gained. A few more shaking seconds later he stood as steady as he could. “There you go, don't try to move. Just get used to standing.” Twilight reassured with a toothy smile. Spike took a deep breath, calming himself enough to steady his frayed nerves. Proudly he grinned from ear to ear.

“Look, I'm standing!”

Twilight giggled,“I know Spike.”

“If I can master walking being a pony wouldn't be so bad. And I may even get some respect around here too!” He slammed a hoof down narrowly avoiding another encounter with the floor.

“Take it easy Spike. We don't even know if you can fully function in that body yet.”

“What does it matter, I'll be going back to normal as soon as we find another copy for the book,” he started with certainty woven deep into his voice. Twilight however didn't share his enthusiasm. If what he had said was true, that the copy he burned was the only one then there would be no hope in attempting to find another. “Y-You will Spike, and I'll help you. So will ask of our friends.”

“Wait!” he gasped in revelation. “Our friends don't know I'm a pony!”

“I'll tell them all tomorrow, right now we—”

“I wonder what they'll think. What if Rarity likes me like this?”

A new fire grew inside Twilight, this time it wasn't rage, but something far worse. “I am sure she likes you the way that you are...” she seethed.

“No, that was the problem. I was a dragon; a baby dragon at that. Of course she wouldn't notice me! How could I be so bli—”

“And what in the name of Celestia is so special about Rarity!” The faint echo of her voice was soon replaced by silence. Spike was terrified. He'd seen Twilight angry before, but her rage was never directed solely on him. Twilight turned away from him. Still silence flooded the room, then it was broken by faint sobbing. “Twilight...?” She collapsed onto her haunches and began to cry louder. “I...I'm sorry... I didn't mean to make you upset...” He made his way as gracefully as he could over to her.

She began crying softly. She stopped the moment two hooves made contact with her shoulders. Looking up she saw two large green eyes gazing down upon her. He was a pony now, but those eyes could warm even the coldest of hearts. “Sorry for yelling at you...” she wiped a stray tear away. Spike said nothing but brought her into a tight embrace.

“It's all fine Twilight.”

“...why is it always her?”

“What now?”

“Twilight, what are you saying?”
She ripped his hoof from her shoulder causing him to stumble backwards. “ Hey, I'm trying to get used to this wh–”

“All you think about is her, isn't it! Nothing but Rarity this and Rarity that! Every day, “Do you think that she'll like it, what if she says no?” Well I have had enough of it!”

Silence flooded his ears, and time seemed to stop. Spike had never seen Twilight explode like that, well not towards him anyway. Frozen in fear that his next move could be his last, he shuffled his way back over to Twilight. She had her head lowered. Spike looked down on her defeated form. He unsteadily put his hoof on her head. “Twilight, I–” she hugged him so fast all he could see was a purple blur. “T-Twi–ilight, can't breathe!” he strained from within her constricting grip.

“Sorry,” she loosened her hold some, “I've never been able to give you a full body hug, you know because you were so little.”

“What? I'm not—wasn't little... ”
Twilight fell silent as the affectionate gesture continued on. Spike didn't want to move, in fact he couldn't. He just got this new, hopefully temporary, body and he didn't know how to work it in the slightest. So he was stuck in an emotional unicorn's grasp. What felt like minutes passed before his chest felt empty. Twilight moved and was looking directly at him. Something wasn't right though. She didn't give him a sympathetic, thoughtful, or thankful stare. This was new and odd. Her eyes were half lidded and a little lazy looking and her mouth sar open slightly. Then she began to move her head closer, and closer until he felt her warm breath upon his jaw.

“Is she trying to kiss me? Why is she trying to kiss me?” he thought frantically. “No, no, no, no, Twilight you can't do this, can you? What about –”

There... she pressed her lips against his. Spike began to hyperventilate, partially from panic, but mostly from excitement. He never knew that a pony's lips could be so soft. Every part of him felt as if he were melting, except for one area that began to feel hot and tight, just around his... private area. He quickly dismissed it as a forgotten trip to the bathroom. As his body melted into a primal pool of pleasure his mind followed soon after. Without even so much as a thought he placed a hoof on Twilight's cheek. This was amazing. He had always practiced kissing, but he never knew it would feel so good. Sadly though, as soon as she initiated their passionate display of affection she pulled away.

Spike became lost in the afterglow. Nothing could top this. He felt alive; he felt like he was floating; he felt as if he'd fallen through the skies while the clouds tickled his skin. His bliss was broken by a sharp gasp. He opened his eyes to a distraught Twilight. Her pupils were near imperceptible specks among a white backdrop, she bit her hoof out of fear and nervousness, and she cowered as of her were going to strike him down, but it wasn't him that she was afraid of. Just as he was about to break the rising tension she bolted up the stairs into her room.

He could still feel it, her soft lips on his, her warm breath lapping against his face. Never could he imagine that one kiss could make your heart soar like the wonderbolts. He wanted more, he needed more. Spike began to make his way towards her room, falling several times. He knocked on her door, “Twilight, are you okay...?”

“Go away...” she groaned, her voice riddled with sorrow.

“Twilight, I...” he took a deep breath and stepped in. It was dark, the only light came from behind him. There was just enough light for him to make out a misshapen lump on her bed. He approached with caution. Twilight could lash out with a minimizer spell out something, anyway he didn't want to take the chance of turning into something horrible.

“Spike, go away...” he continued onwards. “Please, just leave...” . Dead silence filled the air around her. Something felt different. She peeked her head out and looked around. Everything was pitch black except for the small amount of light coming from the door. Nothing, just as she was about to return to hiding noticed that her window was gone. Bit it wasn't at all. Lifting her gaze up she was met with two faintly glowing green orbs. “Aah!” she nearly jumped out of her fur. “Spike, I told you to leave!”

“Sorry, I don't want you to be mad at me...”

“I'm not mad at you.”

“Did I do something wrong?”

“No... Spike you did nothing wrong. I'm the one who did wrong.”

“... What do you mean?”
She rose from under the covers and faced him. With a deep sigh she began to explain, “I shouldn't have changed you without your permission.”

“You're Twilight Sparkle, I knew that you were going to do it eventually. Honestly you could've waited for me to get off the ladder...”

“Sorry.”

“No problem,” Spike grinned displaying his still razor sharp teeth.

“And shouldn't have k—”

“What?”

“I shouldn't have k-kissed you...”
His ego shattered like a glass pane, and his smile instantly grew sour. Twilight could tell that she had wounded his pride. “Don't be upset, I only said that I shouldn't have done it. I never said I didn't like it...” she rubbed her arm, avoiding his judgmental gaze.

“Oh. I-I liked it too.”
He darted his eyes around the room looking for the right words to say. “How much did you like it?”
Even though it was dark Twilight tried her best to hide the growing blush on her cheeks.

“I liked it...a lot...”

Spike swallowed hard, what he was about to say next could ensure that he would get to enjoy another kiss or could give Twilight a good reason to kick him out of her room. “Would you like...to do it again?” He shut his eyes tight bracing for whatever Twilight was going to do to him.

“I would... ”

“Wait, what?”

“But, I don't know if it was right to kiss the first time. So if I kiss you again...”

He knew what she meant. She wanted to but she was scared of what might happen next. No matter how bad he wanted to experience another kiss, he didn't want her to feel bad for doing something they shouldn't. “I understand”—he turned towards the door—“ I'll come back when you're sleep. I have to get used to these legs anyway.”

She watched sorrowfully as he clumsily made his way out of the room. He was upset; he walked slow, his head hung, and his ears lay flat. She wanted to run and hug him and hold him, but the fear of what can come from this held her back. Then she began to question why she felt so conflicted. This has never happened when he was a dragon. Why has being a stallion, a rather cute one by the way, caused her so much confusion. Pondering over every possible outcome of this situation she came up with a simple plan. She could kiss Spike all she wanted tonight but tomorrow she had to find a way to change him back.

So she set her plan in motion. “Spike.”
He stopped, just halfway through the doorframe. “I want you to come here.” Spike obeyed. As he approached Twilight steadied her nerves. He looked so big as he approached. Then she wondered why the spell turned him into a stallion instead of a colt but she was interrupted by a muffled thud. Next to her Spike held tight to the mattress trying to keep his balance.

“I tripped over my foot, I mean ‘hoof’,” he chuckled sheepishly.

Twilight giggled quietly. “He's so adorable!” she stopped. “Where did that come from...?”
“Well, come here. I want to tell you something.”

With a bit of a wobble and a near face plant, he stood at attention. Okay, what did she want to tell him. She was just staring at him with an odd smile that made him feel funny. She wanted something but he couldn't put a claw on it, or hoof now... “So, what did you want to tell me—” in a flash her lips touched his again. Caught by surprise at first he soon began to melt just as he did before, and just like before he felt a tight heat rise around his lower belly, but the euphoric feeling was just too strong. So strong in fact that he didn't notice Twilight backing onto her bed.

He was ripped from her as they collapsed over the side of the bed laughing. Twilight took hold of his cheeks and pulled him into another passionate kiss. Then she wrapped her hooves around his neck pulling him even closer. That strange feeling around his lower belly began to grow hotter and tighter to the point that it began to throb. He didn't know what it was, but it felt damn good. The more they kissed the more it throbbed and pulsed. Twilight moved her hooves down to his back pulling him even closer until what he had been feeling touched her soft warm fur.

It was touching her, sharing in her warmth. Twilight broke the kiss leaving a trail of saliva in between. Spike opened his eyes to a Twilight he'd never seen before. Her hair was a fuzzy mess, her eyes were tired and wanting, and her cheeks glowed a deep crimson. She bucked her hips pressing his fully erect appendage against his own fur causing him to gasp. Then she started to grind her belly on his member. Spike instinctively bucked with her. As they continued Spike breathed heavier and bucked harder. His throbbing member grew harder and hotter until he felt like he had to pee. He didn't want to wiz on Twilight, that would ruin everything. Out was getting closer, he had no choice. Finally at his peak he jumped off Twilight and no more than a second later a long rope of white fluid shot out of it. It coated the sheets behind Twilight, some even got in her hair.
Twilight ran a hoof through her hair, collecting the sitcky substance as age went. It matted the fur on her hoof. She brought it closer taking in the smell. It was so odd; it had a musky scent like metal. Sge couldn't pinpoint it, but the more of the scent she inhaled the more excited she became. No thoughts passed through her mind as she licked her hoof clean. Spike was still coming off his high. He looked down to Twilight who had half of her hoof in her mouth licking and gnawing at it. .

Once she was finished rubbed his semi hard penis with her hind leg. “That came out of nowhere.”

“Y-yeah...” Spike groaned.

“Did you like it?”

“Y...Yes...!” he gasped. “Is that what all ponies do?”

Twilight had to think about the right answer. “Yes, when they really love each other... Spike, do you love me...?”

His eyes brightened. He seemed to be back in reality. “Of course I do.”

“I mean, like a marefriend...”

This hit Spike hard. Of course he loves Twilight, but does he like her as a marefriend? Rarity had always caught his eye. But Twilight was really pretty too; bit Rarity was the most generous mare in Equestria; but Twilight raised him; but did Rarity love him like Twilight does...? He found his answer. “I love you more than Anything Twilight.”

The moment those words hit her ears Twilights eyes teared up. “I love you too Spike”—she looked down to his stiff member—“and I want to show you how much. Roll over and lay on your back.”

He threw his weight to the right of her, plopping down on the bed. Now Twilight could get a clear view of his arousal. It was as big as the one's she read about in her spare time, but he had little nodes running down the shaft. But what a beautiful cock it was. Just looking at it made her tingle all over. She scooted over to him not taking her eyes of his penis.

Spike lay wondering what she was doing. What not cities she do? She already kissed him and gave him pleasure is which he could never have dreamed of. What's next? “Are you ready?”

Twilight loomed over him, rubbing her soft moist flank on his member. “M-mhm...” With his permission she lifted her rear to the tip and pressed down. Spike felt as if he were in heaven. It was like their earlier practice, but a million times better. Twilight in the other hand was trying her best not to yell in pain. Yes it felt amazing, but the pain was brutal. They both felt a blockage. Twilight shook as he pressed against it, intensifying the pain. She summoned up the strength and thrust her hips all the way down. They both threw their heads back in primal screams of pain and pleasure. Twilight lifted her flank revealing blood on Spikes fur.

“Twilight, are you okay!”

“I...I-I'm okay...”

“B-But you're bleeding!”

“It's okay, that is supposed to happen... Please take it slow...”
She placed her hooves on his chest clutching his fur. Spike was no fool. He knew he hurt her in side way, but she said that she was supposed to bleed. That didn't seem right at all. He was just about to get her off him when she started grinding her hips. Her walls held tight to his intruding member, pulling him in deeper, urging him on. He followed her movements, rocking with her. The air became thick with heat. They bucked faster and faster. Spike began panting like a dog in heat while Twilight moaned quietly. Lost in the heat of the passion Spike flipped her over landing her on her back.

Spike stood over her now, his member soaked and throbbing hard. He ran his eyes over her sweat soaked body. She looked so...alluring. He wanted her as bad as she wanted him. No words were spoken just the look in her eyes begged him for more, and he was more than happy to oblige. He positioned himself over her and dropped his hips. Assisted by Twilight’s magic their sexes made contact once more. Spike started out slow and conservative; he then picked up speed slamming his hips against hers.

“OH SPIKE!” she screamed in pure ecstasy. “Please...d-don’t stop!”
He put all of his strength into every thrust. Twilight was now screaming so loud they could wake the entire town. The bed buckled and creaked under Spike’s vigorous movements. Moments later he felt that same feeling he did when they were grinding earlier. It grew and so did the force of his thrusts until he exploded deep inside her, roaring with a jet of fire shooting from his horn. “O...Oh my Celestia… There’s so much…” she panted.

“What…?” Spike groaned, trying to blink away the spots in his eyes.

“We are going to need a serious shower,” Twilight chuckled.

“I don’t need a shower. I need a good night’s sleep.”

“We both do,” she looked around at the sex stained sheets “let me go clean up a little and find some clean sheets.”

“Okay…” Spike pulled his softening member out of her dominated marehood leaving her feeling empty. She sat up and wobbled to her hooves. Gravity took control of the fluids inside her pulling them to the ground in a sloppy wet mess. “And we’ll need a mop…”

Now fresh and clean after their steamy lovemaking, they lay in bed looking out to Luna’s night sky.

“Spike?”

“Yeah?”

“I’ll find a way to change you back. I promise…”

“What? Why would she want to—”

“Goodnight,” she kissed his cheek, “I love you.”

“I love you too Twilight…”

Author's Note

There you have it. I have been working sparingly on this for the last month now, but I have it done. This will be open to more chapters depending on how well received it is.

~Motm