Sleepless in Rarity

Rarity sat on her sofa, staring blankly at the open spell book in front of her. The graphics on the page reminded her of the horrible thing she had done the day before and she squeezed her eyes tightly shut, hoping to block the memory out, only to have images of her sister's glistening lips and ecstasy-filled face dance through her mind once more.

A sickening wetness began to form between her legs and she swallowed hard, her breaths beginning to come faster and heavier before she was full out sobbing.

She pressed her front hooves tightly against her eyes and cried into them, her entire body shaking in hysterics.

"Oh Sweetie, what have I done?" she cried out.

The unicorn let herself collapse onto a throw pillow and she pressed it against her face, allowing the soft material to soothe herself. She inhaled deeply, then quickly pulled away from the pillow, staring at it in shock as she realized that this was the pillow Sweetie had been using while she was visiting, and it now smelled strongly of her soft, curly mane.

Her teeth pressed hard into her lip as she rubbed her thighs together and her eyes darted to the clock. She had plenty of time left before Sweetie Belle returned from school.

Forcing herself to ignore a screaming thought in her mind that what she had done was wrong, she rolled over on her stomach and pressed her face against the fluffy pillow. She paused and gulped, biting down on her lip as the sweet scent of her sister filled her nostrils. She then slowly let one hoof trail down her stomach to small hard nub and began rubbing it fiercely, imagining—to her dismay—that it was the small hoof of her little sister massaging her.

With a shuddering breath, she illuminated her horn in a sparkling blue aura and focused it to create a thick magical dong. She pulled her hindquarters up so that her flank was high in the air and her tail was flipped over her back, then she levitated the member behind herself, lowering it until it made contact.

Rarity moaned out hotly as she brushed the tip of the sparkling toy against her lips, causing her to shiver. With a careful ease, she used the head to spread her lips apart and sink the toy inside of her, exactly the way Sweetie's member had.

She slid the toy in and out of herself, its curves massaging all the right parts of her inner walls. Her free foreleg wrapped around the pillow in front of her and she breathed in her sister's sweet scent as she used to horn to fuck herself, her other hoof still circling her clit.

With each stroke of her hoof and slip of the toy she came closer to the edge, her breathing becoming frantic as it mingled with her moans. The toy slammed into her one last time as her muscles convulsed around it, drenching it and causing her to let out a loud, breathy moan. Her hole was then left empty as the spell dispersed and she slid her hoof out from between her thighs, her lower body collapsing into a comfortable position.

Rarity shuddered and hugged the pillow close to her, her eyes tightly closed as what she had just done sunk in. "Oh Celestia, what's the matter with me?"

She bit her quivering lip and sniffled, burying her face in the pillow as she sobbed herself to sleep.

***

"I'm telling you, it really did happen!"

Two school fillies sat on the merry-go-round out in the school playground, their heads pressed closely together as they argued.

Sweetie Belle's cheeks were bright red and she frowned grumpily at her friend's skepticism.

"Yeah right Sweetie Belle, I know what AJ said about sex and Rarity is way too prissy to do that," Apple Bloom explained.

The young unicorn's eyes narrowed and she huffed. "And how would you know?"

"Because AJ said it's dirty, and Rarity hates dirt," the little yellow earth pony stuck her nose in the air and stated with a smug grin.

"Well yeah sure, but it's for ponies who love each other, and my big sister loves me," Sweetie Belle proclaimed.

Applebloom cocked a brow and tilted her head back down, scratching her chin thoughtfully. "I guess you're right. Well, my big sis loves me lots too, so if sex means love then there's no way she won't have sex with me."

"Of course she will. Be sure to let me know everything when she does."

The little ponies jumped as the school bell rang and they stood off of the metal playground toy, running after their classmates back inside the school.

Applebloom settled into her seat and smiled at Sweetie Belle as she slid into the desk next to her. "I promise I won't leave out a thing. Wish me luck."

***

Rarity jerked awake to the sound of the door to the Carousel Boutique being slammed open as an excited filly came trotting through and threw her bag on the floor, spilling out its contents.

"Sweetie, what in Equestria are you doing? Clean that mess up this instant!" Rarity shouted as she wiped her groggy eyes.

The mare then pulled herself into a comfortable sitting position and stared sternly down at her sister. Sweetie Belle took a step back, lowering her head defensively and frowning widely.

"What's the big deal? It's just a little mess and I thought we were going to have fun." Sweetie explained, a coy smile spreading across her face.

"Fun? Is trashing my home you idea of fun?" Rarity asked as she began rubbing her temples.

"Well no," Sweetie trailed one small hoof across the floor and looked bashfully up at her sister with sparkling eyes. "I was talking about having fun like we did yesterday."

A hard lump formed in Rarity's throat as her sister's words hit her, preventing her from forming any of her own. A guilty heat seeped down the unicorn's spine as she searched for the words that might help her sister understand why they couldn't have fun like that again.

"Well you see Sweetie, what happened yesterday was... Well it was a mistake, one that I wish I could take back." She let her head fall low as the guilt overtook her. "I'm a terrible big sister, I never should have taken advantage of you in such a way. I just hope you can forgive me."

Sweetie took a timid step toward her sister, her head cocked curiously to one side. "A mistake? But I thought you liked it, you seemed so happy."

"But I was happy, that's the worst part of all of this. The only thing I can do to try to right this situation now is to make sure I never do it again," Rarity explained with heavy remorse in her voice.

"What? N-no, you said sex was for ponies who love each other. You do love me, don't you?" The filly's voice cracked under her uncertainty and she bit her quivering lip to still it.

The mare's purple-maned head snapped up and she stared at her little sister with wide, tear filled eyes. "Of course I love you! How could you even ask something like that?"

"Well I love you too, and we both like what we did yesterday, so what could be wrong with it?" Sweetie Belle stepped backwards until her tail bumped into the couch, then slowly lowered herself down, letting her flank fall onto the soft carpet beneath her.

"Sweetie what are you do-?" Rarity stopped short as the filly in front of her spread her legs wide, lifting them high in the air.

The little unicorn ran one white hoof slowly over her poofy pink lips and smiled at her flabbergasted sister. "What's the matter Rarity? I thought you liked what I have down here. Or maybe you like what I learned from the book better? Which is it, hmm?"

Rarity narrowed her eyes slightly as she stared down at the filly, fighting the urge to bury her face between her sister's soft white thighs, but with every second that ticked by, her self control was slipping away. After several long moments, she finally trotted toward's her sister and lowered herself in front of her, staring straight at the delectable pink flesh between Sweetie's thighs.

She took a deep breath and squeezed her eyes shut, lowering her face into the filly's plot. Her tongue flicked out and around, running along the little unicorn's slit with every ounce of precision and skill Rarity had at her disposal. The young filly moaned out as her sister's hot tongue grazed her sensitive lips and she rocked her hips lightly in tune with the licks.

Lightly, Rarity ran her teeth over Sweetie's tiny clit and sucked it into her mouth before she continued down the soaking line, her tongue finally teasing the dark little hole there. Sweetie thrust her soaking slit against her sister's muzzle with a squeaky moan, sliding it up and down against her nose. She stared down at her older sister with a thick blush covering her cheeks. The filly slid herself down, rubbing her sweet little lips all over her sister's mouth, who ravenously lapped up the wetness in front of her, eliciting increasingly louder moans from the filly.

Rarity then pulled abruptly back from her sister and licked her own lips.

Sweetie Belle leaned up and pouted out her lip. "Hey, why'd you stop?"

Rarity looked at her little sister with an amused sparkle in her eyes and she grinned widely as she turned her gaze to the saddlebag lying near the entrance.

"I'll start again, once you've finished your homework."

Sweetie let out an annoyed groan and smacked herself in the face with one hoof as pulled herself reluctantly to her hooves. "This had better be worth it..."

The filly glanced back over her shoulder as she trotted, to see her sister holding 100 Spells for a Sleepless Night tightly in her aura of magic.

"Oh trust me Dear, it will be."