Thinking About You

by garatheauthor

Rating: mature
Tags: Porn, Rainbow Dash, Sex, My Little Pony: Friendship is Magic, Sweetie Belle, Anthro
Length: 3035

Sometimes you can't help but fuck your best friend's younger sister.

Sometimes you can't help but fuck your best friend's younger sister.

Note: All Characters are 18+

Contains: Anthro, Oral, F/F, Sloppy Sex

Cover art uses work created by SoraSlipHeed.

Commission for the great and wonderful, Irequatina.

Proofread by Irequatina and Melesse Lindenya. Thanks for the assist y'all.

Published 2021-11-18 22:10:00 UTC
Last updated 2021-11-18 22:10:00 UTC

Thinking About You

Sweetie Belle giggled. “What would Rarity say if she found out this is what you were doing to her little sister?”

“Fuck her,” Rainbow grumbled.

She pushed Sweetie roughly against the wall and planted her lips against her neck. Her kiss was hungry and her posture desperate as she pinned Sweetie Belle in place.

Sweetie quivered, the faintest of moans escaping from her lips.

“I don’t know if I would want you to fuck her,” Sweetie teased, a dangerous edge entering her voice. “At least, not without me there to watch.” She grinned. “Or maybe even join in. I’m a jealous bitch like that.”

Rainbow rolled her eyes and planted another kiss a little lower, trailing her way down from Sweetie’s neck and across her collarbone. Her path was sloppy and lustful, keeping focus on the one objective in mind.

She reached up and cupped Sweetie’s breast, massaging it through the material of her bikini top. Her tits were fantastic, plentiful and far more than could be easily handled with just a single hand. She kneaded into it, loving the way it felt, loving the way that a mere touch could make Sweetie’s breath hitch and grow a bit more frantic.

“Didn’t take you as a freak,” Rainbow teased.

Sweetie snorted. “And I didn’t take you as the kind of mare who’d swoop in on a pony as soon as she’s legal.”

“What can I say,” Rainbow said, flashing a playful smile, “I’m problematic like that.”

Her hand soon slipped under the tight fabric of Sweetie’s top and she cupped her bare breast, rubbing the palm of her hand roughly against her nipple. It was already hard, sticking out proudly.

This meagre stimulation really seemed to get to Sweetie as a frantic moan soon pierced the air and her complexion blossomed to such a wonderful shade of red.

“Do you like it when I touch you like that?” Rainbow asked.

Sweetie nodded quickly. “Y-yes, Rainbow.”

“Good, because I love touching you like that,” Rainbow said. “I love your tits, your ass…”

She punctuated this point by slipping her hand away from Sweetie’s chest and instead using it to thwack her roughly on the rump. The blow was gentle though sharp enough that there was a potent clap of flesh against flesh.

Sweetie gasped at the impact, her face growing even more heated.

“And don’t even get me started on what’s down here,” Rainbow whispered.

She slipped her hand down the front of Sweetie’s bikini bottom, pressing her fingers against her sex and rubbing it gently. She didn’t push inside, at least not yet, instead just probing and figuring out how wet her little plaything was.

The answer was very. She was very wet.

Only then did she push her fingers inside, pressing them in all the way to the knuckle in one fluid motion.

Sweetie instinctively tensed, her walls flexing and clenching around Rainbow’s digits. Her face was an explosion of red as a dopey smile formed upon her lips.

Rainbow didn’t keep her fingers there for long before pulling them out and drawing her hand back, looking at it. A few thin strings of arousal connected two of her digits, offering such a depraved little spiderweb of crude fluids.

She pushed away from the wall and made a show of wiggling these two fingers in front of Sweetie’s face.

“Someone’s horny,” she teased.

Sweetie bit her lip. “Only for you.”

Rainbow grinned and popped the fingers into her mouth, suckling them clean. Sweetie’s essence tasted utterly divine, sweet and earthy, more special than any other mare in the world.

The display also had the added benefit of making Sweetie’s cheeks warm even further, which was always nice.

“Gods, I’m going to eat you out like there’s no tomorrow,” Rainbow whispered.

Sweetie bit her lip. “Please do.”

Rainbow moved back towards Sweetie and kissed her again, this time planting her lips against hers.

Their mouths soon parted and their tongues ventured forth in a hungry little dance. They swirled around one another, battling for dominance. Though this clash only lasted for a brief moment before Sweetie was on the back foot, allowing Rainbow to lead at her own pace.

One of Rainbow’s hands had a mind of its own as it went for Sweetie’s fat ass, gripping it firmly. She kneaded into it without delay, loving the way it felt.

She also enjoyed the hurried little moans that ebbed forth from her eager plaything. They sounded so desperate, so lustful. It was always amazing to hear the desire of the mare she was with.

Rainbow finally pulled away from the kiss and reached out, groping at the back of Sweetie’s bikini. She clumsily tugged at the drawstrings until she managed to free the knot and allow the fabric to spill open. And with it, Sweetie’s abundant tits were now free.

Rainbow trailed her kisses downwards, once again, moving efficiently towards one of Sweetie’s nipples. She took it in her mouth and suckled firmly, rolling her tongue around the areola. At the same time, she fondled at her plaything’s other breast, firmly kneading into it.

Sweetie tasted absolutely divine, her coat having the slightest tinges of vanilla and lavender upon it. These likely came from whatever beauty products she used. Rainbow closed her eyes and continued to suckle roughly, not stopping until she’d had her fill.

Only then did she pop off and continue going lower and lower. She planted tender little kisses all the way along Sweetie’s soft stomach and down past her hips. The only thing that made her pause was when her lips brushed against the smooth material of Sweetie’s bikini.

Rainbow opened her eyes and reached for it, hooking a finger underneath the string holding it together. She was too possessed by the moment to care about caution as she yanked roughly and practically tore the skimpy fabric away from Sweetie’s body.

“Hey!” Sweetie chastised. “Those aren’t cheap.”

“I’ll buy you a new one,” Rainbow whispered.

She buried her snout into Sweetie’s bush and gave the pinkish fuzz a kiss. Then she went a little lower, stopping just before her partner’s delicate little flower.

Sweetie’s pussy looked absolutely divine, puffy and glistening with her lingering arousal. Rainbow drew in a breath, getting a nice whiff of it, savouring the way it smelled. Fittingly, it smelled like flowers, shrouded by one of the many lavish soaps that the unicorn used.

Rainbow normally wasn’t fond of such frills but it did wonders for Sweetie Belle. It also reminded her of eating out Rarity, the two of them clearly having very similar body care routines.

“Gods, you smell nice,” Rainbow murmured.

Sweetie reached down and gently ran a hand through Rainbow’s mane. Her motions were so tender, loving, and caring. This was the kind of affection that a mare could get used to, it really was.

Rainbow drew back in and pressed her lips against Sweetie’s lower counterparts. Her tongue came forth with such hunger as it plunged between her folds. She swirled her appendage around in tight little circles, moaning as she tasted her lover.

Much like Sweetie’s smell, her taste was utterly divine, her juices were even richer and more pronounced now that they came directly from the source.

“Rainbow,” Sweetie moaned.

Rainbow reached up and placed a hand upon Sweetie’s hips. A moment later she felt Sweetie’s other hand brush against it and soon their fingers interlaced as they held one another’s hands.

Sweetie gently squeezed her digits, her grip quivering as Rainbow renewed her efforts. Another moan soon punctuated the air, oozing forth upon such hurried half breaths. Her voice was beautiful, that of a singer, and it came forth with all the intensity that such a career would bring.

The song of pleasure was unrestrained, powerful and lustful. It was more beautiful than any song that Rainbow had ever heard before.

Rainbow added her own notes to it as she moaned into Sweetie. Her tongue now glided around effortlessly. Her lover’s pussy was now so slick that there was nothing that could possibly impede her progress.

Her ear perked up as she listened attentively, wanting to learn everything that worked and everything that didn’t as she partook in this exploration. Sweetie’s pussy was still foreign to her, still a fresh landscape that needed to be tamed.

A breathy hitch formed in Sweetie’s voice as Rainbow brushed against something especially receptive within her. She then quivered a little more energetically than before as Rainbow pushed against something else. These were little landmarks, points upon a carnal map that seemed to offer rather prosperous results.

Sweetie’s other hand rested upon the back of Rainbow’s head as she clutched a nice fistful of her colourful locks. She seized them tightly, holding Rainbow firmly against her cunt.

Not that Rainbow minded, she was at home here, savouring every moment that she got to eat out this mare. She closed her eyes and melted against her, putting everything she had into her tongue work and voyage of lustful discovery.

Her tongue started to ache, stiffening slightly. Though Rainbow wasn’t about to be known as a bad muff diver. She willed her stubborn appendage onwards, pushing herself to her absolute limits to ensure that her darling Sweetie felt only the most intense forms of pleasure imaginable.

Sweetie’s breath started to grow ragged and it seemed like every few moments a fresh shiver would course through her.

Rainbow tried to draw back, just to catch her breath, but Sweetie’s grip proved steely, denying her even an inch of freedom. A faint groan bubbled forth from Rainbow’s throat and she forced another intoxicating breath in through her nose. Her senses were utterly dominated by her companion with Sweetie occupying centre stage within her mind.

“I can’t hold out much longer,” Sweetie whispered. “I-I think I’m getting close.”

Rainbow beamed at the promised orgasm and channeled every last ounce of power she had into her tongue. She moved it around with increasing vigour, gliding it through Sweetie’s folds as if it were a Wonderbolt dominating the skies. Her moves were swift and agile, always trying out something new and exciting.

Sweetie cried out and held Rainbow tight against her pussy with all her might. A moment later, the floodgates gave out and she quivered with such violence that Rainbow thought that she was about to collapse, right there and then.

Her orgasm came swiftly and it came hard, splashing into Rainbow’s mouth and threatening to overwhelm her. Rainbow drank as quickly as she could but even she proved incapable of keeping up with the flow. Soon a wash of slick juices overwhelmed her mouth and splashed against her complexion, matting the fur all around her face.

The first couple waves started to taper off, and with it, Sweetie’s orgasm started to slow. She rode through the final few motions, grunting as she desperately rocked her lower lips against Rainbow’s mouth. Though eventually, even this came to an end as she finally let go.

Rainbow drew back swiftly and gasped for breath, feeling herself wobbling a little. She’d almost been drowned from that, feeling more than a little waterlogged by the display.

“Holy shit,” she whispered.

Sweetie giggled and covered her mouth with a hand. “Yeah sorry, I’m uh… I’m a bit of a squitter.”

“Hey, it’s cool,” Rainbow whispered, drawing in her first clean breath she’d had in a good long while. “I uh… I like that in a mare.”

She wiped at her face, feeling the slickness of Sweetie upon it. Her fingers were now coated in the stuff and she examined them, loving the way they just glistened. Though no matter how hard she tried to clean her face, she couldn’t do away with the shroud of lust that coated her complexion.

“How are you…” Rainbow began before shaking her head. “Fuck it.”

She wanted more, she needed more of Sweetie’s essence. So, without warning, she pressed back against her cunt. She ignored the fatigue that besieged her and forced her tongue back inside.

“Rainbow,” Sweetie cried. “You insatiable bitch.”

Rainbow would’ve chuckled if her mouth wasn’t occupied with more important things. Instead, she lifted her hand and offered a thumbs up, letting her partner know that the message was received.

Her jaw ached but she ignored such mortal pains. After all, when you were drinking the elixir of the gods you really learned to stop worrying about your mortal coil.

That was a pretty deep way to put ‘eating pussy’.

Rainbow was just a poetic bitch like that.

Her tongue roved around and she kept an ear open. Sweetie’s voice was so much more potent than before, her melody staying nice and strong with every passing motions. Though any coherency was now lost, it was just a cacophony of lustful noises that bore no sanity or reason to them.

Sweetie reached down and clutched at Rainbow’s hair, clenching a nice fistful of it.

“Fuck,” she whispered. “Fuck, fuck, fuck… FUCK!”

Rainbow could only smirk as she pressed even harder against Sweetie’s pussy. How could she even think about giving up when a mare was singing her such high praise? It’d be wrong to slow down even a little when Sweetie was so in the zone.

Rainbow reached up and groped at her ass, clutching a nice handful and giving it a firm squeeze.

Sweetie sighed. “Perverted old…”

Rainbow cut her off by pressing firmly against a certain little cluster of nerves inside her sex. Soon those harsh words were turned into a ragged moan that bore next to no coherency.

Rainbow growled as she drove herself deeper, huffing under her breath as she really picked up the pace. It wasn’t long before her tongue returned to its perverted little marathon, flowing through her pussy like a pegasus gliding upon some euphoric jet stream.

Sweetie’s legs quaked and Rainbow was legitimately concerned that they were going to give out any second now. Though this didn’t slow her, it didn’t slow her one bit.

Rainbow closed her eyes, just savouring the growing intensity of Sweetie’s voice as it grew to such a frantic din. Though there was no teasing or holding off the inevitable anymore.

Sweetie gasped loudly and cried out with such vigour. A moment later, her juice flowed forth and once more threatened to drown Rainbow Dash.

Still, Rainbow wasn’t a coward and the threat of certain death didn’t stop her from putting herself in front of this unrelenting torrent. It filled her senses with Sweetie’s essence, utterly clouding her reality. Both the taste and scent were so incredibly pronounced upon the air.

Rainbow drew away, panting for breath. Miraculously, Sweetie still seemed to be standing, even if her legs continued to shake under her. She looked exhausted, utterly spent, as if every ounce of energy had been drained from her.

“You’re insatiable,” Sweetie whispered. “You know that, right?”

Rainbow smirked. “I just like hearing you moan, babe.”

She drew away, giving her partner just a little bit of room to recuperate.

“I do have a pretty great voice,” Sweetie whispered, closing her eyes.

Rainbow snorted. “I’d say that you have a really fucking great voice, Sweetie.” She got to her hooves, wobbling a little as she did so. “Along with a fantastic ass, beautiful tits, and…” Rainbow sighed. “Don’t even get me started on how nice you smell.”

She leaned forwards and braced herself against the wall, with one hand on either side of Sweetie’s head.

“Any chance I could get a kiss for all my hard work?” Rainbow asked.

Sweetie pursed her lips and pondered this. “You are kind of covered in uh… my orgasm.”

“I promise, it tastes really fucking good,” Rainbow teased, flashing a cocky smile. “Trust me.”

Sweetie opened her eyes just so she could roll them. “Fine.”

Though instead of letting Rainbow take the lead, Sweetie reached out and pulled Rainbow into the kiss herself.

Rainbow made a surprised little noise, followed by a second, as Sweetie pushed her tongue into her mouth.

Sweetie swirled it around a couple of times before drawing back and beaming with a wide smile.

“You’re right, that doesn’t taste half bad,” she said.

Rainbow smirked. “I mean what can I say? I’m usually right.”

“Right about what?” Sweetie asked.

Rainbow blinked, pulling herself out of her stupor. She was standing on a sunny beach surrounded by a bunch of other ponies.

Sweetie Belle stood before her with a raised brow. She was still fully dressed. Or well, as fully dressed as a bikini would allow.

“What?” Rainbow asked.

Sweetie tilted her head to the side. “You uh… you said you’re usually right and then kind of drifted off.”

Rainbow blinked and then glanced down, seeing how nice Sweetie’s swimsuit looked on her.

She’d really grown into…

Rainbow’s gaze snapped back up and she forced herself to make eye contact. It was probably not a good idea to fall back into that specific avenue of thinking. Especially considering the very dark look that Rarity was currently shooting at her from a nearby towel.

“Did you hit your head?” Sweetie asked.

Rainbow nodded. “Oh yeah, uh… during my last Wonderbolts performance.” She offered a shaky smile. “Anyways, it was good seeing you, Sweetie, and congrats on turning nineteen, hope the birthday was good.”

“It was great, me and my girlfriends went to a club in Canterlot.” Sweetie then beamed, winking at her. “You should totally join us next time!”

Rarity loudly cleared her throat and the two of them looked at her.

“Uh yes, Rainbow? Could I possibly talk to you for a moment?” Her gaze then narrowed to a dangerous degree. “Alone preferably?”

Rainbow paled. “Uh… I don’t…”

Sweetie looked between them and slowly inched away. “You know what? I think I’ll leave you two to it then.”

When Sweetie was out of earshot, Rarity allowed herself a very foreboding smile. “Shall we talk about the concept of what is and isn’t an acceptable age gap, darling?”

Author's Note

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