Loving Thyself

by Blck-Dynomite

Rating: mature
Tags: Slice of Life, My Little Pony: Friendship is Magic, Romance, Sex, Human, Twilight Sparkle
Length: 7921

Twilight and Sparkle answer the age old question of selfcest. Is it masturbation or incest?

Twilight, and her Earth counterpart, Sparkle, receive a bit of rather shocking news about their closest friends, Sunset and Shimmer, prompting them to try and figure out how in the blue hell this could've happened!

In the end, sometimes the only way to figure something out, is by getting your hands dirty, and other parts of the body as well.

Note: All characters are 18 years of age, except for Twilight and Sunset who are around twenty something by pony standards and headcanons. Can ya dig it?

Published 2015-06-09 23:40:01 UTC
Last updated 2015-06-09 23:40:01 UTC

The "Experiment"

Author's Note

Yep, Blck-Dynomite's back, and he's got somethin' new. Blck-Dynomite blames two fics specifically for the creation of this story. If y'all like it enough, Blck-Dynomite may do a sequel. Possibly. Maybe. Don't quote Blck-Dynomite on that.

The "Experiment"

The universe just loved to mess with people’s heads. Take this current situation, the parallel world Earth, filled with parallel counterparts to each denizen of Equestria. Thus far, it was believed that some ponies didn’t have counterparts at all, up till now that is.

For more than a couple of years now, Sunset Shimmer and Twilight Sparkle had never met their counterparts, believing that maybe they were a unique existence even in a mirrored world. But that theory was blown out of the water.

Sunset Shimmer had not too long ago written to Twilight about a girl who looked exactly like her, talked like her, but definitely acted differently than her. From what Sunset had described, she figured that her doppelganger was at a stage in her life like she was before coming to Ponyville and meeting her friends, so

Twilight instructed Sunset to be patient with her other self, knowing that if they were alike, then Parallel Twilight, who conveniently went by Sparkle, would come to see the Magic of Friendship.

What Princess Twilight wasn’t prepared for was that Sparkle did in fact have a friend, she just went to a school that was farther away. And that friend was none other than Sunset Shimmer, Earth’s Sunset Shimmer, or as she preferred to go by, Shimmer.

Well needless to say, that blew their “unique existence” theory out of the water, and now Princess Twilight wondered when past enemies like King Sombra, Queen Chrysalis, Starlight Glimmer, or – heaven forbid – Tirek would spring up. Heck, she was still waiting to see Discord there, but given he was the Spirit of Chaos, she figured he could just exist in whatever world he felt like.

Now Twilight had come back to see Sunset a few times, arranging get-togethers with their counterparts. It was strange, seeing her other self. Dressed in a white lab coat, a black pencil skirt, a blue shirt underneath, and black framed glasses, she even wore her hair up in a bun, which she figured was to keep it from getting tangled in whatever work she was doing at the time.

Sunset’s counterpart was actually very different as well. She too wore her hair up, but in a ponytail. She didn’t carry herself like Sunset did, Shimmer seemed to be more lax, and Twilight couldn’t help but sense a bit of shyness from this girl. The opposite could be said of her own double, Sparkle carried herself with superiority, a calculating mind with eyes that scanned you as if determining your mathematical value or something.

In any case, Sparkle seemed to have the same reaction Twilight did when she met her time travelling self. It made Sunset and Shimmer laugh out loud, seeing Sparkle damn near strip search her Pony double and invading her personal space. Twilight had no idea you could feel so violated, and by yourself no less.

So things progressed as nicely as they could. It was a fun thing to see Twilight and Sparkle argue and debate about magic and how it wasn’t scientifically sound, or in fact existed at all. If anyone saw them together, the four of them would just say that they were twins, and that they were having a twin’s day out.

Hey, why not, they all looked and sounded alike to a T, and it wasn’t unnatural for two sets of twins to become friends. Although it did confuse the hell out of Flash Sentry for a bit, as well as the girls back at CHS, but everything got sorted out in the end.

During an outing, orchestrated by Sunset and Shimmer, both Twilights were called to meet over at Sunset’s apartment. They usually didn’t go there unless they needed to talk privately about things that were out there, since, well, Sunset lived alone. It was there that Shimmer directed Twilight and Sparkle to sit on the couch across from them.

Twilight couldn’t help but notice something strange between Sunset and Shimmer, they seemed to be nervous about something. When Shimmer came around and sat next to Sunset on the adjacent couch, the two of them sighed and stared directly at the Twilights.

“There’s something we need to tell you guys,” said Shimmer.

“What’s that?” Sparkle asked.

“Well…It’s…Look, this is going to sound weird, wrong, and everything under sun, but please hear us out before you go completely off the handle.” Sunset begged.

Twilight was starting to get concerned. “Of course, Sunset, whatever it is we’ll listen.”

Sparkle nodded her head in agreement.

Taking a deep breath, Sunset spoke first. “Shimmer and I, we’re…we’re together.”

“‘Together’?” Sparkle asked.

“Together as in…we’re dating each other, romantically.” Shimmer clarified.

Time seemed to grind to a halt, the gears in both Twilights’ heads stopped as they tried to process this.

“It just sort of happened one day, we’ve been hanging out a lot and well, we just hit it off,” said Sunset.

Twilight was the first to reboot, shaking her head as she leaned forward. “S-Sunset y-you’re dating yourself! Your parallel self! That’s – well of course you’d hit it off, Shimmer’s you!”

“Yeah, she is me, and at the same time, she’s not me. I know you know what I mean,” Sunset looked both Twilights in the eye, “both of you.”

Twilight and Sparkle glanced at each other. What Sunset said was true, Sparkle was Twilight, and yet she wasn’t. Their personality traits were similar to a degree, and differed in some key areas. Twilight was molded into the pony/person that she was because of her friends and mentor, as where Sparkle had mainly kept to herself and to her study of science, keeping only one person close to make sure she didn’t become a total shut in.

It was only now that Sparkle was starting to understand how great it was to have many friends, but still, she did not have the same experiences as Twilight, all the adventures, the crazy incidents, and certainly not the Battle of the Bands.

Twilight sat back on the couch and let out a defeated sigh. “Okay, I get it. Shimmer isn’t you per se, but neither are you her. So…I…I guess I can see how you can feel differently towards her, being a different person.”

“You’re not really saying this is okay?!” Sparkle asked incredulously. “This shouldn’t even be possible, how can you just date yourself like that, Shimmer?!”

“It’s just as Sunset said, I don’t see her as me. I see her as another person who just happens to look like me. Sparkle, you even told me that there was research about how we choose our romantic partners based on our parents, right?”

Sparkle winced, knowing she had just pulled the logic card on her. “Y-Yes, statistically speaking, females tend to search out male partners based upon characteristics of their fathers. And on the flipside, males seek out female partners based on the same criteria, only for them it’s their mothers. So…you’re saying that you chose Sunset as a romantic partner based on the fact that she looks like you?”

Shimmer shook her head. “Not just because of that, I mean, I feel more comfortable around her. She doesn’t judge me and I don’t judge her, we know what the other likes, and we’re both still individuals in our own right.”

“So, there you have it. Shimmer and I are – have been together.”

“Wait how long?!” Both Twilights asked in unison.

“About six months now…” Shimmer answered.

Six months, both Twilights had to take a moment to process that. Their two best friends had been seeing each other for over six months, half a year together. It eliminated the thought that they had just started this relationship, they’ve had it going, and been making it work for six whole months under their noses.

“Oh and in case either of you are wondering, the sex is great. We know all of each other’s little weak spots and kinks.”

“SUNNY!” Shimmer hissed in embarrassment.

And now both Twilights’ brains went into overload as their faces turned a bright shade of red, and steam actually came wafting out of their ears. And then they knocked out.

Sparkle was pacing in her basement laboratory, a giant whiteboard was set up, with various marker drawings depicting Sunset and Shimmer’s relationship. The two brainiacs tried to quantify how this was possible, Sparkle was following the science end of this, while Twilight worked the magic route, adding Sparkle’s scientific notes and equations to help.

The two discovered that they worked well together, if they decided to, they could probably focus their brain power into solving world hunger, or finding a source of free, never ending energy. But the world could wait, this was something important.

After many arduous hours of writing, thinking, and debating, the two Twilights found themselves on the floor of the basement, staring up at the ceiling in exhaustion.

“So…we’ve covered everything from extreme narcissism,” said Sparkle.

“To possible magic manipulation, either by outside forces or as a result of two Sunset Shimmers occupying the same dimensional space,” said Twilight.

“And in the end…we learned diddly squat!” They finished in unison.

Sparkle took off her glasses and rubbed her eyes, trying to contemplate why her longtime friend would fall in love with herself, another version of her, but it was the same thing. Not to mention, that the two of them had been engaged in sexual intercourse with each other.

“Hey, Twilight?”

“Yes, Sparkle?”

“Is it considered masturbation or incest when having intercourse with a parallel doppelganger?”

The question made Twilight blush, she glanced over to Sparkle who was blushing as well, but still held the serious look of a scientist. “Truthfully…I’m not really sure. It’s selfcest, I guess.”

“I would think that…ahem…exploring your body from another perspective would be a strange thing to encounter, how would you even get over the awkwardness of *gulp* touching yourself and making yourself climax? All while you watched it happen from a third person point of view?”

It was a strange thing, Twilight wouldn’t admit it openly, but she did occasionally clop at night. When she was living in Golden Oak Library, she couldn’t clop as much, what with Spike resting not just two feet away from her bed. The times she was able to get a minute alone to herself was when she indulged. Rubbing her marehood with her hoof. Often she was worried about being caught, while the downstairs was open to the public, the upstairs was strictly Twilight’s living quarters so entry was forbidden to patrons.

Unless they were Twilight’s friends, like Rarity, AJ, or Fluttershy. So bearing that in mind made Twilight finish a little quicker than she would’ve liked, but it did relieve the stress. But now that she had her own castle, and with Spike now having his own room, Twilight was free to be as loud as she wanted, and clop as much as she wanted to at night.

Her first night, after getting the castle to feel more like a home, was spent with two dildos and a bottle of lube, using both to pound herself into climax over and over again, without worrying about waking Spike and fearing that he’d see her like that.

Twilight would admit, masturbating was fun and it felt really good. Of course she did this a few times during her younger years, but back then it was just to relieve stress and get rid of distracting urges. Now though, now she was free to enjoy the act.

“Um…Twilight, I’m going to ask you a completely personal question, and feel free not to answer. H-How do um…ponies…masturbate?”

Surprisingly, Twilight didn’t feel that embarrassed to talk about this. “Well, so far I’ve seen few differences in our pony genitalia, as opposed to human genitalia. But, essentially, for pegasi and earth ponies, and some unicorns, we use our hooves.”

Sparkle winced at that. “Wouldn’t that hurt? Rubbing…that part…with such a hard surface as a hoof?”

“You’d think so, but no. Don’t get me wrong there’s some trial and error before you get it right, but there’s a part of the hoof that’s a little softer, and that’s the part you’d use to, um, touch yourself with. But that’s not the only way, not if you’re a unicorn or alicorn like I am now.”

“What’s the difference?” Sparkle asked curiously.

“We use our magic. It’s mostly something figured out amongst older unicorns, I’d say as early to preteen to mid-teens, that you can focus your magic into a cylindrical form, like what a simple sex toy would look like. Mares would then use that hardened magical dildo and penetrate themselves, simulating sex. Or, if your concentration is good, you can send stimulating surges of energy directly to the clitoris, resulting in climax.”

Sparkle sat up, cross-legged, and looked at Twilight with fascination as she heard all this. “I see, and you can do this to yourself and to another girl – urm – mare?”

“Well yes, but only if they consent, like with most sexual encounters, the other party must be accepting, otherwise you’re just forcing them into intercourse.”

“Um, you generally go without clothes in Equestria, that’s what Sunset told me. Which I could understand since you are ponies and wear a fur coat twenty-four-seven, but how do you not…”

Twilight knew this question was coming. “How do we not stare at each other’s private parts?”
Sparkle nodded.

“I’ll admit, it is a little hard not to. I mean, a flick of the tail in a certain direction and a pony’s privates are on full display. Stallions penises are housed in a sheath, but their testicles are within plain sight. It’s just become a social norm not to pay attention to those parts, the only time true arousal is felt is when a pony finds herself attracted to somepony.”

Sparkle was starting to see how different, besides the ponies and magic part, Equestria was from Earth. “And, what are the attitudes towards same sex couples?”

“You’ll always have those who don’t approve, but they’re in the minority. Since the female to male ratio is skewed slightly, mares end up in relationships with other mares more often than not. So to answer your question, we’re pretty opened minded.”

Sparkle brought up her legs and hugged them to her chest as she looked down solemnly. “Equestria sounds like a wonderful place.”

Twilight glanced back at Sparkle, but blushed when she noticed that her counterpart’s new sitting arrangement allowed her full view of her black panties. Twilight returned her gaze to the ceiling, her heart pounding from the sight.

“I still can’t understand why those two fell for each other,” admitted Sparkle.

“I can’t believe they actually admitted to having sexual intercourse, more than once!” Twilight admonished.

Sparkle blushed harder as she struggled to say what she was thinking. “In a way…I guess, who would know better how to pleasure you than yourself…there’d be no hit and miss, you’d just know what the other you wanted and just how do it, and in turn you’d do the same for the other.”

Twilight was starting to feel this conversation going somewhere that she wasn’t sure she was ready for it to go. All this talk about falling in love with your double was a little more than weird, for crying out loud she was blushing from seeing Sparkle’s panties, an undergarment she was wearing as well, and it’s not like she ever got off on seeing her body. But then again, that body wasn’t a mirror double of yourself, walking, talking, breathing, and thinking almost like you.

If Twilight was feeling this much anxiety, she could only imagine what Sparkle was feeling. In fact, she did know, she was in the same spot not too long ago. Sparkle had only recently understood how wonderful friendship was, and up till then, she was just alone.

The thought of intimate contact from another person (or pony depending on your perspective) never crossed her mind, believing any sexual urges were a distraction and could be easily satisfied by herself.

Now though, Sparkle’s views on relationships and social interaction had changed a lot. Feelings and sensations were opened to her and she was scared of them slightly, it was the same thing Twilight felt when she first made friends, not caring, and once she had them, she was almost scared of all the new things they opened her up to, and oppositely, she loved it.

“Sparkle.”

“Yes, Twilight?”

“Do you…Do you wish to conduct an experiment?”

Sparkle seemed to snap to attention at the word “experiment”, something that both shared in common. “W-What kind of experiment?”

“An experiment in physical intimacy…with each other.”

If Sparkle wasn’t blushing hard before, her cheeks were burning now. “Y-You want to engage in intercourse with me?! Yourself?!”

Twilight sat up and played with the hem of her skirt as she tried to remain calm in her proposition. “You and I said it, we don’t know or understand how…intimacy with one’s dimensional double would work, but we both have a theory now, the one you stated earlier. So…why not see if it’s true?”

“Is it even possible to feel aroused at seeing yourself?” Sparkle asked.

“We won’t know unless we try, so…”

Sparkle was nervous about this whole venture, but despite the fact that her other self seemed just as embarrassed and shaky about the idea, she couldn’t deny seeing the confidence and strength that laid hidden within her.

A product no doubt of experiencing many hardships, trials and the like back in her home world as the Princess of a nation. Just like Sunset, both of them are far older than Shimmer and me, nearly ten years our seniors. Well, ten plus years in regards to Sunset, but that’s a different story, and already they’ve had some life experience, thought Sparkle.

It was in this moment that Sparkle decided to trust, well, herself, and let Twilight lead her into this experiment, trusting the older hers’ experience in this matter. “Okay, l-let’s conduct the experiment.”

Twilight’s eyes widened slightly at hearing Sparkle’s compliance, a small smile gracing her lips. “Okay then, how about we do this somewhere other than a basement floor.”

“O-Oh, yes, this would make for a poor, and rather tasteless, place for this…ahem…‘activity’. My parents shouldn’t be home until later, we can go up to my room and conduct the experiment there.”

“That sounds good, lead the way.”

Sparkle stood up along with Twilight, the bespectacled girl lead her pony counterpart up the basement stairs and through the door. Sparkle called out through the house, making sure that neither Shining Armor nor her parents were home. Having been met with only silence, both girls walked up the stairwell.

With each step Sparkle and Twilight took their heart rates increased another beat. In just a few moments they would be…touching and possibly, most likely, kissing each other behind closed doors.

Before either of them knew it, both girls had arrived at their destination. Sparkle twisted the knob of her bedroom door and ushered Twilight in. This wasn’t the first time that Twilight and seen Sparkle’s room, it was rather not unlike what hers was currently.

A shelf filled with books on all manner of subjects, ranging from math all the way to physics and then some. Near the window was a desk, with drawers that each contained neatly arranged supplies, and on top of it was one of those computer things she used once.

On the vacant part of the wall was another shelf, but this one was filled with photos and some knick knacks, mostly trophies and ribbons from science fairs past, and awards from her new school, Canterlot High, which weren’t exactly science related, but no less important to her. Some of the photos were of herself and Spike, who was currently being quietly shooed from the room. A night stand was on the right of the bed, a small lamp and a electronic alarm clock rested upon it, along with a charged cellphone.

Sparkle closed the door, making Twilight jump slightly from hearing the shutting. She turned around and saw that Sparkle had her back to her, still dressed in her white lab coat. The room was deathly silent, a great tension had befallen the bedroom as the two girls stood there. Both of them felt that if neither of them said anything or did something, then they’d lose their nerve before any real information could be gleaned from acts they planned to commit.

“I guess…we should get started,” said Sparkle, breaking the silence.

“Y-Yeah,” agreed Twilight, gulping.

Sparkle sat on the edge of the bed, with Twilight taking up the space next to her. Both girls were fidgeting with their skirts, a habit that Twilight had developed since acquiring the garment. Their legs were pressed tightly together, a strange tingling sensation starting to develop in their lower abdomen and traveling down to their nether regions. Was this excitement? Nervousness? Nervicitement? Whatever it was called, it felt strange, but not in bad way, more like anticipation.

“So how should we start?” Sparkle asked.

“Ahem, I suppose kissing would be a good start, and from there we’ll just see where it goes.” Twilight answered.

Believing that that was a fair enough compromise, Sparkle and Twilight took in deep calming breaths to steady their nerves. Twilight and Sparkle turned to each other, one looking at herself through the corrective lenses of her spectacles, and the other laying eyes on this foreign, yet familiar version of herself.

Twilight took the lead in this, leaning closer to Sparkle as she pressed her lips against her double’s. Sparkle’s eyes flew wide open at the electric, tingling sensation that ignited on her lips. Twilight was gentle with her kiss, pressing firmly, but not too firm as to try and domineer this moment.

Sparkle saw that Twilight’s eyes were closed as she lightly kissed her, and, deciding not to be static in this experiment, reciprocated the action by leaning into the kiss. She had had little to no experience when it came to kissing another person, much less another girl. But strangely, this felt nice, weird, but nice.

Twilight and Sparkle parted and looked each other’s blushing faces, a goofy smile threatening to break out upon their faces.

“That was nice,” said Sparkle.

“A-Agreed,” said Twilight.

“Um…Twilight, is there a particular way you’d like to be kissed?”

“Y-Yes, but, only if you want to that is.”

Sparkle’s answer was to close her eyes and leave herself ready. Twilight took a moment to collect herself, once she was ready, she leaned forward and kissed Sparkle again, but this time she pressed harder onto her lips. Twilight opened her mouth, and as if on cue, Sparkle did the same.

The two girls moaned sensually as their kiss became more passionate, Twilight snaked her tongue into Sparkle’s mouth, making her flinch for a moment, but then settling and welcoming her double’s wet appendage.

Sparkle and Twilight fervently kissed each other, moaning filled the room as gasping breaths echoed in their ears. So lost in their kiss were they, that Sparkle didn’t realize what her hand subconsciously doing. Her right hand suddenly found itself resting atop Twilight’s left breast, messaging and kneading the sensitive mound and causing her partner to moan a little more.

She’s a bit rough, but it still feels good, thought Twilight.

Twilight’s right hand moved as well, brushing aside the lab coat lapel to grasp Sparkle’s left breast, cupping the mammary and messaging it.

She’s so gentle, thought Sparkle.

The two of them continued their kissing, kneading and squeezing the others breast to further increase the pleasurable feeling it brought them. After a few more seconds, Twilight and Sparkle ended their kiss, the cliché strand of spittle connecting them even while parted. It was like looking into a mirror, both had intense blushes, eyes slightly glazed from the heightened state, and their normally rational minds hazy with building lust. They both noticed that neither of them had removed their hands from their resting spots, but Twilight and Sparkle didn’t mind.

“That was…strangely, invigorating,” said Sparkle between pants.

“Definitely…There seems to…be a little more to this than we…initially thought,” said Twilight in the same near out of breath state.

“Perhaps we should…move onto something a little more, physical, but it would require removing our clothes.”

Twilight could see something in Sparkle’s eyes, as if she was trying to keep her scientific and normal state of mind intact. Whether if it was because she was scared to let herself go and indulge in this, or as a way to stay in control of herself and the situation, had yet to be determined. Still, Twilight knew that it was most likely a mixture of both. In the end, Twilight agreed to the removal of their clothes.

Both faced forward and began disrobing. Sparkle hurriedly removed her lab coat, suddenly finding it stifling. Twilight observed Sparkle, noticing the differences in their wardrobe. While Twilight, not by choice mind you, wore a blue, buttoned down blouse and purple skirt, Sparkle was the opposite. She wore a blue turtleneck shirt, and a black pencil skirt.

And of course, there was the obvious differences in their hair styles, Twilight wearing hers down, while Sparkle kept it tied in a bun, and the biggest being Sparkle’s corrective vision glasses.

Now Twilight watched Sparkle reach for the hem of her shirt, taking a couple of calming breaths before pulling the shirt over her head, exposing her B-cup breasts, held securely by her black bra. Twilight decided to mimic her double, unbuttoning her blouse and removing the ascot. She then slid the blouse off her body, showing her pink bra and C-cup breasts. Sparkle glanced over at her counterpart and gawked at the difference in bust size.

“W-What’s wrong, is my body strange in some way? I never really take the time to actually look over myself when I pass through the gateway, is something out of place?!”

“N-No, but…I thought I was just imagining it when I was touching you, but…your breasts are bigger than mine!”

Twilight blinked, taking a moment to let that sink in. “That’s not possible, we’re the same, so our busts should also be the same.”

“Then take off your bra and let’s see!” Sparkle demanded.

Twilight wasn’t convinced, but knowing that this was her, she thought it best to comply and removed the bra all together. Sparkle did the same, both girls now half-naked before each other, she gulped when she looked upon her double’s purple mammeries and erect nipples, which, like hers, were a shade darker than the rest of her.

Now that the obstruction of the bras were gone, Sparkle was able to confirm it. She gently grasped Twilight’s breast, making the Princess let out a sensual squeak of pleasure from the contact. Sparkle blushed but continued her analysis. She took her time, feeling the circumference of Twilight’s breast, and using her free hand to compare it to her own. With a bit of a disappointed sigh, Sparkle stopped.

“They are bigger than mine, at least a cup bigger.”

“How’s that even possible?! We’re the same, same height, same eye, hair, and skin color, everything! Why’s this different?”

“I don’t know, have you done anything to facilitate this kind of growth?! Exercise, eating habits, environmental factors, anything come to mind?”

Twilight thought about it, trying to figure out what could’ve changed – “Oh no, I think I know what did this.”

“What?!” Sparkle asked.

“I was a unicorn originally, but after showing that I understood the magic of friendship, Celestia – Princess Celestia – had me undergo an ascension, transforming me into an alicorn, a pony with wings and a horn. I got a little taller and my horn got a bit longer too, but I didn’t think these were part of it too!” Twilight punctuated her point by pointing at said breasts.

“How could you not have noticed? I thought females, mares, had mammeries as well! Surely you must’ve felt them enlarge a little?” Sparkle asked dumbfounded.

“A mare’s teats aren’t usually an erogenous zone like they are with humans, and since they’re located down there with the rest of our genitalia, it’s just one of those things we live with that we pay attention to when we’re with foal. And since I never sexually explored that particular part of my anatomy, I never noticed the difference between then and now.”

Sparkle pouted a little, she never saw the big deal about different women’s bust sizes, but that was other women, this was herself, and she just got beat by her other self, so it was a little annoying. Twilight picked up on Sparkle’s feelings and started to worry a little.

“I’m sorry, I didn’t know that you were sensitive about this…I-I’m sure I can find a spell back home to get them to shrink down to a size that will match yours and –”

“Stop,” said Sparkle as she brought her hand to derail Twilight’s train of thought. “It’s not a big deal really, it’s just…just…ugh!”

Suddenly, Sparkle surprised Twilight by grabbing her shoulders and pushing the older girl onto the bed. Twilight then found herself straddled by Sparkle, now looming over her as she propped herself up on the palms of her hands. Sparkle seemed to catch on to what she had done and blanched.

“I’m sorry, Twilight! I-I don’t even know why I did that! I just –”

“Sparkle.” Twilight reached up a placed a hand against her other self’s cheek. “It’s alright.”

Sparkle smiled and released a sigh of relief. Twilight leaned up and kissed Sparkle again, with younger girl opening her mouth to invite the familiar invader back in. Sparkle pushed down as she leaned into the kiss, bringing herself to rest atop Twilight. The Princess of Friendship brought her arms around Sparkle, embracing her, pressing their bodies closer together as they made out.

Both girls moaned out loud as the sensation of their breasts pressed against each other increased their arousal. It was a familiar feeling, as if every scrape of the nipple, every press of their flesh, the sensation somehow felt stronger, doubled. Was this masturbation? They still weren’t sure, but at this moment, all they knew was that this felt so good and so right.

Sparkle broke the kiss as she loomed over Twilight, she rose up on her knees, still straddling Twilight, and removed her glasses. She placed them on the nightstand next the bed, and then reached behind her head with both hands. With a few quick adjustments, Sparkle was able to release her hair from its bun, allowing it to freely flow down over her shoulders and lower back.

Twilight’s eyes widened, it was as if she was looking at herself, straddling herself. But even now, she could tell that this was a different person, just by looking into those amethyst eyes.

Sparkle came back down and kissed Twilight again, after a bit, she began trailing kisses along Twilight’s jaw line, making the Equestrian Princess giggle from the tickling feeling it gave her. Sparkle continued downward, peppering her collarbone with kisses and making her way to the first her marks. Something inside her had changed, a switch had been flipped, making her forget whatever asinine excuse they came up with to get them this far.

Twilight could feel Sparkle’s hot breath over her right nipple, causing her to shudder in anticipation. Sparkle stuck out her tongue and gave the perky nip a quick flick. Twilight’s reaction was immediate, releasing a sexy yelp from the action. Sparkle licked at it again, but Twilight had bit down on her lower lip, trying to stifle the embarrassing sounds, sounds she had no idea they could make.

Sparkle decided to get a little more serious. She used the tip of her tongue to trace around Twilight’s areola, spiraling upwards to the nipple and spiraling back down. Sparkle opened her mouth a little wider and latched onto Twilight’s breast, bringing the nipple and part of Twilight’s breast into her mouth.

The wet and warm sensation of Sparkle’s mouth caused Twilight to moan loudly into the room, she had never touched her teats before, never played with them or did the things that Sparkle was doing to them now, this proved to be her downfall, for now she had no defense for the wave of new sensations.

The younger girl began sucking on Twilight’s breast, as if she were a child nursing. Twilight continued to moan louder and louder, her body writhing from the tingling and utter arousal that was flowing through her body. Sparkle never knew she could look so…sexy, or sound so sensual when in the throes of passion.

Was that how she sounded when she masturbated? Were these the sounds she made when she was in bed at night, or home alone? If they were, then she wanted to hear more of herself.

Sparkle didn’t know that her own body could be so sexy. The fact that she was suckling her own breast, on another version of herself, was something she never imagined could happen. She could start feeling a growing heat between her legs, making her panties become wet with arousal.

Twilight was feeling this in spades, every suck, and every lick of her breast filled her with bliss. She wanted to put her hands on Sparkle’s head, and push her face onto her teat and keep her there to continue the pleasure, but this was herself, and Twilight knew that something like that might ruin the mood right now, no, now was not the time for that. Already she felt her womanly juices flowing from her pussy, staining her panties and her skirt as they dribbled out.

Sparkle stopped her ministrations, rising up and looking upon herself. Twilight was a panting mess, her chest rising and falling with each labored breath, eyes half-lidded and filled with lust as she looked up at her double, almost begging her for release. Sparkle knew this look, because she was feeling the same thing, and thankfully, she was not one to keep herself waiting.

The younger girl lowered herself, continuing her kissing trail down to Twilight’s naval and stopping at the waistband of her skirt. Sparkle worked her fingers into the crease, catching both the skirt and panties at the same time. The girl of science pulled down both at once.

Twilight worked her legs out from under Sparkle, allowing for easier removal. Sparkle continued, watching as Twilight raised both legs up to allow her to slip them off and toss them to the floor.

Sparkle watched as Twilight brought her legs down, still tucked tightly together. She was embarrassed, understandably so, even though they were the same person, exposing such a place to another person was still nerve wracking. So to put Twilight at ease, and herself, Sparkle sat on the bed and removed her own skirt and panties, tossing them right next to Twilight’s.

It was only now that both girls realized that they were completely naked, bare before the eyes of their doubles. Even knowing that they were, well, themselves, Sparkle had to admit that Twilight was beautiful, and to Twilight, the feeling was the same for Sparkle.

The younger girl slid closer to Twilight’s legs and began gently rubbing up and down the thigh. The gentle stroking seemed to make Twilight relax a little, and even helped Sparkle as well. With the nervousness gone, Twilight slowly opened her legs to herself. Sparkle’s eyes widened, seeing her vagina in a mirror was one thing, but she never saw that part of herself from this perspective.

Twilight’s nether lips were glistening with arousal, a musky aroma wafted through the air and caught Sparkle’s sense of smell. Like a homing beacon, the aroma guided Sparkle closer and closer towards Twilight’s pussy, lowering on her hands and knees to get a better view of her prize. Twilight squirmed where she lied, excited and at the same time feeling very awkward about seeing her double look so intently at a place they both shared.

“C-Could you open your leg a little more, please?” Sparkle asked.

Twilight nodded and opened just a little wider, allowing Sparkle to lay on her upper half down as she propped herself up on her elbows. Her clitoris was engorged, and vaginal juices seemed to flow freely from the opening, coating her labia and vulva. The heady aroma was familiar, the same musky smell that was conjured every time she masturbated, but this was stronger.

Maybe it was because Twilight did not see Sparkle as herself, at least not in this scenario, to Twilight, possibly, she saw Sparkle as another girl.

It was a theory, and something that Sparkle could, and kind of did, understand. Sparkle reached out with her right hand, bringing her index finger to press against Twilight’s vulva. Her reaction was instant as Twilight tensed up and let out a sharp gasp, feeling a jolt of pleasure shoot from her nethers and up her spine.

Sparkle decided to do what she had fantasized about someone doing to her, even though she wasn’t going to be the one receiving the pleasurable act, Sparkle knew she’d enjoy the act of going down on herself. Sparkle, even though she’d deny it vehemently, had been to a few porn websites, watching both male/female and female/female sex, so from here on out she was going to draw upon that knowledge and hopefully please her otherworldly self.

Twilight tensed up when she felt Sparkle release a hot breath onto her moist sex, causing her womanhood to release a little of her orgasmic juices. Without much warning, Twilight felt Sparkle slip her index finger into her wet honeypot. Sparkle listened as Twilight released gasping mewls, she decide to test the waters before getting fully into it.
The younger girl wiggled her finger within Twilight’s love tunnel, taking a moment to explore the inner walls of her vaginal canal without crying out from pure bliss, which was exactly what the other her was doing.

Twilight curled her toes as she dug them into the sheets and mattress, feeling Sparkle’s slow examination of her sex. It was like slow torture as she kept running her finger along her inner walls, and every so often flicking that same finger across her g-spot, causing Twilight to buck her hips forward, her body pleading for her counterpart to give her more.

Sparkle decided to give Twilight what she wanted, knowing that this was slow torture even for herself. The younger girl slid her middle finger alongside her index finger and began pumping them both in and out of Twilight’s pussy.

“Aaaaaah~ Sparkle, yes, thank you!”

Sparkle blushed harder but concentrated on her work, watching her own fingers slide in and out of, well, her pussy. Love juices flowed freely, making Sparkle’s fingering that much smoother. Suddenly, Sparkle removed her fingers from Twilight. She brought them before her face, taking in the hefty aroma of Twilight’s musky scent, her scent.

It was then that Sparkle did something that she thought she’d never do, she brought both fingers into her open mouth and began sucking on them, licking away the secreted juices of her double. Twilight was about to protest Sparkle’s sudden stop, until she saw what she was doing and it made her blanch just as hard as the other her.

To Sparkle, even though she knew this was her own taste, and never being able to do such a lewd thing before, found it easier for some reason. Maybe it was because it was another person, yes it was herself from another world, but she felt that it was different. Whatever the reason was, Sparkle was becoming more aroused by the taste of herself, the salty, sweet nectar of her dimensional double’s flower was addicting, and she wanted more.

Before Twilight had a clue what was going through her head, Sparkle lowered her head towards Twilight’s crotch. Sparkle gave Twilight’s vulva a sensual lick, tracing from the base all the way around. Twilight released a sharp gasp as she arched her back, her pussy squirting a little from the mini-orgasm that Sparkle induced.

The younger girl smiled, knowing that she could elicit this kind of reaction from herself gave her a little glee. She stuck her tongue out and pushed it against Twilight’s entrance, the older girl cried out as Sparkle slipped her wet appendage deeper into her pussy. At last Sparkle entered Twilight’s sex.

Sparkle began swirling her tongue around, licking more of the juices that flowed out like crazy. Twilight instinctively bucked her hips forward, wanting more of Sparkle’s nimble tongue inside her. Her body was wracked with bliss, feeling Sparkle’s tongue wiggle within her, hitting every spot she liked, it was fantastic, wonderful, and every other word she couldn’t think of right now.

Sparkle maneuvered her right hand down her body and between her legs, using the same fingers she used on Twilight and piercing her pussy with them. Sparkle began matching the rhythm of her licks and suckling with the pumping of her fingers, she moaned into Twilight’s quivering pussy, the vibrations only intensifying the already intense sensation.

“S-Sparkle, I-I’m close! I – Ooooohh~”

The younger girl got the message and switched tactics, she pulled out her tongue, and latched out Twilight’s clitoris, sucking hard on the bundle of nerves while flicking her own clit. That was the push that Twilight needed as she arched her back again, screaming lustfully into the air as her pussy released its pint up orgasm. Sparkle watched as the dam was broken and a flood of vaginal juices came squirting out of Twilight’s pussy.

Sparkle opened her mouth and placed it over the entrance, slipping her tongue back in as she ate out the cumming Twilight. The older girl tried in vain for her counterpart to wait, but she couldn’t, her mind was on fire with blissful pleasure, continuing to cum directly into the awaiting mouth of her double. Sparkle continued to play with her own pussy throughout the session, her juices flowing down her inner thighs and over her hand.

After a minute had passed, Twilight’s orgasm had finally ended. The Princess of Friendship huffed and puffed, her left forearm draped over her forehead as she panted from the workout she wasn’t expecting. Sparkle rose up from between Twilight’s legs and crawled up towards Twilight. She laid herself on top of Twilight, and stared directly into Twilight’s eyes with a half-lidded gaze.

Twilight smiled at her counterpart, she never felt that kind of sexual release before, even by her own hands (hooves). Yet, somehow, this other her was able to give that to Twilight, Sparkle did that. The younger girl lowered her head and kissed Twilight on the lips. Twilight returned the kiss, moaning into her double’s mouth as she tasted her own juices on Sparkle’s lips and tongue. Sparkle pulled back and licked her lips lasciviously.

“I didn’t want you to miss out how we tasted,” said Sparkle.

“Mmm, it’s not all that bad, really,” replied Twilight.

Sparkle cuddled closer to Twilight, both intertwining their legs as they laid there for a moment to catch their breath.

“Um, Twilight?”

“Yes?”

“There’s something else I want to try, but…”

“What is it?”

Sparkle leaned forward and whispered into Twilight’s ear. The Princess of Friendship blushed again, but smiled nonetheless as Sparkle pulled away.

“I don’t have a problem with that, I’ve also been curious on the level of sexual gratification that would bring,” said Twilight.

“Gee, it’s almost as if you were me,” said Sparkle sarcastically.

Twilight smirked at that little remark, but instead of words she used her actions. Sparkle suddenly felt everything shift around, with Twilight quickly flipping the both of them around. Now Sparkle found herself with her back on the mattress, and Twilight lying on top of her.

The older girl rose up, motioning for Sparkle to tilt to her right side. Sparkle complied, twisting her upper body until her left shoulder as facing Twilight. The otherworldly princess pried Sparkle’s legs open, bringing her left leg to hang over her right shoulder. Twilight scooted herself closer, her heart beating ever faster as the thought of what she was going to do excited her.

Sparkle tensed a little when she saw how close Twilight’s sex was to hers. Despite the small gap, Sparkle and Twilight could feel the heat radiating from their pussies, begging them to make contact. Twilight looked to Sparkle as she gave a nod of affirmation. The Princess of Friendship closed the distance and pressed their wet sexes against each other.

Both girls released a gasp that sounded like it was in stereo. Twilight ground her pussy into Sparkles, feeling how their moist nether lips smacked, making lewd noises with each movement. The girls let out a sharp gasp when their clits scraped against each other, motivating Twilight to move even faster.

Twilight began humping Sparkle harder, the bed creaked and shook with each thrusting of her hips. Sparkle’s mind was completely engulfed in the fog of lust that was this moment. The younger girl, once figuring out the rhythm, matched Twilight’s movements and bucked her hips forward to meet her double’s, further increasing the intense sensation.

Twilight began fucking Sparkle harder and harder, feeling a pressure building in her lower abdomen. Sparkle could feel it too, and it only served to quicken her pace, wanting release after granting it to Twilight. Sensual moans, lust filled cries of bliss, and lewd wet, smacking sounds echoed within the room as the two horny girls kept thrusting their hips into one another, wanting to push the other over the edge.

It all came to a head as Twilight and Sparkle found the sweet spot, grinding their crotches as their clits rubbed against one another. Twilight and Sparkle screamed at the top of their lungs as their orgasm shook their bodies to their core, their coating each other’s sexes in a deluge of love juices. Twilight and Sparkle kept grinding, trying to make this feeling last as long as it could. Sparkle rose up and hooked her arms around Twilight, sparking a fierce make-out session as their orgasm continued.

After what felt like an eternity, both girls came down from their high, bodies trembling with blissful delight at the mind numbing sex they just had. Yes, they agreed, this was sex, not masturbation or incest, this didn’t feel wrong. In fact, it felt right.

“I guess…we don’t have anything to question about Sunset and Shimmer’s relationship now,” said Twilight nearly out of breath.

“Oh I’m sure we’ll find something, it is those two after all.” Sparkle replied cheekily.

“Well…guess we better get cleaned up…”

“Yeah…later though, I’m tired.”

Both Twilight and Sparkle fell onto the bed, tangled in each other’s arms and legs, and drifting off into a nap, spent from their “experiment”. However, if both girls were still aware, they would’ve noticed that the door was ever so slightly ajar, and that two pairs of aquamarine eyes were staring at them with wide eyed shock.