The mistakes we make in the dark.

by ssunsxt

A fine line.

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Sunset Shimmer had never felt any empathy towards bacteria; that was, until now, as her friends had collectively decided to inspect her like some molecule under Twilight’s microscope. Unfortunately, she shared at least one scheduled class with each of the girl’s and so each girl’s stare bore into the back of her head as the week pressed on.

Home Economics, which had once been a safe haven from responsibility as she allowed Pinkie to take complete control of their assignments, now consisted of the pinkette reciting a list of “super fun-tastical activities” she and the others could do together the following weekend. Or, if she were to change her mind, alternative plans for this weekend. Sunset could only chuckle nervously and decline.

The tension in Math class wasn’t as prevalent, but was definitely still there. After all, discretion hadn’t ever been one of Twilight’s strong points; especially when it came to getting information out of someone, let alone Sunset. The red-head did her best to answer the other girl’s questions truthfully and politely— just enough so that she would stop pressing her about what was really going on.

P.E with Dash had to be the worst, though. The blue girl made a point to tease her at any available opportunity, bringing up the fact she had covered for her with the rest of the group, and how Applejack was making it her personal goal to ‘get to the bottom of whatever was going on.’ Sunset found it absolutely exhausting.

It hadn’t been until she closed her locker for the last time on Friday afternoon that she realised just how draining her friends had actually been recently, and the thought alone made her frown. They were just concerned. They only cared about her. They were only worried.


“Don’t worry, everything’ll be better soon,” Adagio purred into Sunset’s ear as the red-head shuddered below her. “Now be a good girl and spread your legs.”

Sunset did as she was told and shifted towards the edge of the bed, laying back against the mattress and spreading her legs, gingerly, before Adagio forced her knees further apart. She winced in pain. “Ow—”

“Sorry.” The siren mumbled as she kissed along the inside of the other girl’s thigh, her teeth grazing against the skin lightly before she bit down on the soft flesh, eliciting a whimper from the former equestrian.

“Why are your teeth so sharp—”

Adagio pressed a kiss to the already bruising skin before she shifted on her knees to press another kiss to Sunset’s navel. “The battle of the bands. When the girls and I half-transformed into our siren forms; we grew wings and our teeth sharpened to a point. My fangs never really went away.”

Sunset bit her lip as Adagio’s warm breath highlighted just how slicked the skin between her thighs had become, and she let out a breath as the older girl held onto her legs firmly.

The bed frame beneath her groaned as Sunset adjusted her hips, back arching slightly off of the mattress as Adagio took her into her mouth, the singer’s warm tongue spreading her folds and pushing it’s way inside. Sunset’s eyes fluttered beneath their lids in ecstasy and she slowly slipped her fingers into Adagio’s hair to pull her face closer— her tongue closer— her climax closer.

“Mh—” she whimpered, the siren digging her nails into the flesh of her thigh as an indication to not hold onto her so tightly. Sunset immediately relented. Adagio gave her leg a squeeze.

“Say her name.”

“T-Twilight—”

“Louder,” Adagio’s voice was warm against her core.

“Twilig— nh-” she panted, her hips jolting as the older girl rubbed at Sunset’s clit in tandem with her tongue, massaging and gentle, but with just enough pressure to send Sunset reeling.

She pulled a hand from Adagio’s hair to push back her own, crimson tresses slick and damp with the sweat that gathered on Sunset’s skin. She began gently rocking her hips against the older girl’s face and she could feel Adagio grin against her. Sunset let out a breath.

Her toes curled in her climax, her ankles hooking behind the other girl’s rear, pulling Adagio into herself desperately as she moaned out the Princess’ name once more.

“There’s a good girl,” Adagio whispered against her as she lapped at the wetness that left the other girl panting for breath in the dark. After a few more moments Sunset relented, and Adagio wiped at her chin with the back of her hand. She pulled away to shift upward and propped herself above the red-head to look down at her bliss-filled face.

Sunset blinked her eyes open only for Adagio to cover them with a hand. “We’re not done yet. Keep your eyes closed. I’m still the Princess.”

Sunset faltered in hesitation for a moment but complied, and not a moment later Adagio pulled her hand away again. She felt the mattress shift as the older girl straddled her hips and she wet her mouth in anticipation before Adagi—

Before the ‘Princess’ captured her in a kiss. She felt Twilight’s tongue probe at her mouth for access which she willingly gave, and before long both girl’s were breathing against each other— hands each travelling the other’s body sheepishly. More so the case for Sunset, but she tried her best to focus with how foggy her mind had become, overtaken with lust and euphoria. Sunset’s face was a blaze; she could taste herself on the other girl’s lips, and she squirmed at the thought.

She felt the Princess nip at her lip slightly before pressing her mouth against hers once more. This, in turn with the confident tongue that pressed against her own, made Sunset’s chest bubble in ecstasy as white-heat spread throughout her veins. Honestly, she wondered why they hadn’t started with this instead.

Another nip came, but the sharp canine of the other girl caused Sunset to wince, and Adagio immediately pulled back to clear her throat.

“Well,” she glanced away as Sunset propped herself up on her elbows to look at her, “I’m surprised you still had stamina left for a second round. You sure do like being topped, huh.”

The red-head frowned with a blush. “I’ve never done this before.”

“I was teasing Sunset. Like I said before: I don’t care.” She ran her hands along either side of the other girl’s neck, working her palms across her collarbone and the length of her shoulders. As much as Adagio hated to admit it, the other girl was fairly attractive. She had a toned stomach with curving hips, topped off with long, tanned legs. And her ass, Starswirl, her ass.

She’d gotten lost in her thoughts as she traced her nail across the sweat-slicked skin of Sunset’s nape, only snapped back to reality when the other girl reached up and set her hands atop Adagio’s own. “Mh?” She blinked, “did you say something?”

“I was just wondering if… if when you transformed—” she hesitated, “did it hurt?”

Adagio fixed her with a look before blowing the hair from her face and averting her gaze. “The initial transformation was fine. After all, we are—” she drew her lips into a line, “we were sirens. It felt good to have even a shred of what we once were, back.”

But?...”

Adagio looked back at Sunset’s face for a moment before clasping her hands behind the other girl’s neck. “But, transforming back… is another story altogether.” Her voice dropped to a whisper as she leaned closer to Sunset’s neck, reserving to kiss and nip at the skin there once more.

Sunset grunted in protest and gave her arms a squeeze. “C’mon Adagio can’t we just talk?”

“Last I checked that wasn’t part of our arrangement.”

Sunset frowned, opening her mouth to retort only to be cut off by the other girl, who moved to climb off of her lap. “Well then, if we’re done here, I’ll call a cab.”

“Adagio you can stay over—”

She pressed a finger to Sunset’s lips with a scowl. “I’ve already told you no, Sunset Shimmer.” The red-head rolled her eyes.

“Stop being stubborn.”

“Stop being obtuse.”

Sunset narrowed her eyes and frowned as Adagio pushed herself from the bed to collect her clothes. She licked at her lip and found the familiar metallic taste of blood. She pressed a finger to her mouth and pulled it away to examine the darkened finger tip in the dim lighting of the apartment.

“Sorry, for that,” Adagio glanced down at the other girl’s mouth for a beat before she tied her hair up with her scrunchie.

“It’s alright. It didn’t really hurt,” Sunset offered a smile.

“I suppose I’ll just have to bite harder next time,” Adagio smirked with a wink that sent the butterflies in Sunset’s stomach fluttering. She watched the other girl straighten out her clothes in the full-length mirror, turn her head from one side to the other to inspect herself, and tuck a lock of hair behind her ear.

“Are you sure you’re okay to get home?”

“Listen, Sunset. You’re sweet, but I’m a big girl,” she paced over to where Sunset sat on the edge of the bed and leaned down to level with her. “I’m perfectly capable of looking after myself. You don’t need to play the hero.”

“Right,” she averted her gaze, “Sorry. Force of habit.”

“Habits can be broken. Something to work on,” she stood straight and ruffled Sunset’s hair before she turned to leave, but not before Sunset caught her wrist.

“I—… next weekend probably isn’t good for me to meet up again. Pinkie and the girls want to hang out and if I cancel on them again, then…” she trailed off bashfully and looked away.

“Ah, right.” Adagio pursed her lips. “Well that’s fine then. We can just meet the week after that.”

Sunset frowned and reached out for her again. “Wait that isn’t—… what I mean is— why don’t we meet up during the week? I’m sure the girls wouldn’t care if—”

The siren clicked her tongue. “It’s cute that you think I need your friends’ permission to come see you. If it’s what you want then I don’t see the problem. It seems like they’re the ones with issues. Am I wrong?”

Adagio watched with an arched brow as Sunset scrambled for words to say. To make excuses for the other six. “You have my number. If you want to meet up, just text me. If I respond, we’ll see what can be arranged.”

Once again her heels clicked against the wood of Sunset’s staircase and the younger girl peered over the loft’s railing, as Adagio paused in the doorway. “Don’t let those girls dictate your future. It’s your life, after all. It’s your power to decide what to do with it.”

“That isn’t—”

“Thank you for the lesson today. I’ll see you soon, Sunset.”

The door clicked behind her.

Sunset paced back over to her bed to sit against the mattress for a bit. When she found herself in reality again she let out a sigh, heavy shoulder’s weighing her back down against the bed as she covered her face with her hands. She understood their arrangement. She understood that Adagio was in no way inclined or required to tell Sunset anything about herself, or her past. But something inside her just wanted to know.

What made her tick.

Why agree to this… ludicrous situation. Sleep with her to learn how to sing. Sunset would have laughed if she could find any humour in it. Why Sunset, the very girl who had taken everything from her, and not someone-- anyone-- else? Was there a deeper reason; and if so, what; or was that just wishful thinking? If it was wishful thinking, what was she wishing for in the first place?

Sunset groaned, running herself in circles.

Now that she was left alone, the silence reminded her just how damp her skin and hair had become during their… session. She groaned, again, moving to sit up and collect fresh clothes from her dresser. She didn’t particularly care as she plucked a random t-shirt, new pair of pyjama bottoms and clean underwear from each of the drawers before making her way down the stairs to her bathroom, flicking on the string lights that hung around the second floor railing as she went.

“Why can’t she just accept a simple act of kindness?” Sunset muttered, furrowing her brows in annoyance. “I’m not stupid. I know she’s only using me.”

Sunset frowned and winced a bit as she flicked on the knob for her shower, the old pipes creaking before spitting the water out into the old tub. “Then again,” she sat her clothes down on top of the toilet lid, “I’m not exactly any better…”

She sighed and ran a hand through her sweat-slicked hair, grimacing as she felt just how matted and greasy it’d become. “Well that’s gross.” After a moment of letting the water heat up, she stepped into the shower and sighed as a wave of calm eased out the tension in her shoulders.

She closed her eyes, surrendering herself to the water, and let out a sigh.


Sunset pushed the bathroom door open as she scrubbed at her hair with a towel, the warm steam spilling out into the living room around her. She went over to her desk and jiggled her mouse a bit to wake up her desktop before typing in her password and putting on some music.

She then laid her towel over the back of her computer chair before rounding the staircase to go back upstairs. Sunset hummed along with the music and puckered her cheek, fishing out her hair brush and blow dryer, taking them back downstairs with her. She tossed the blow dryer onto the couch and sat on the arm as she combed the damp tangles from her red tresses, tapping her foot against the rug in time with the drums.

Once she flipped her hair to the other side, gave it a comb, and was happy with herself, she plugged the blow dryer into a free socket by her TV and switched it on. She held her hand in front of the warm gust of air to test its heat before running her fingers through her hair and blowing it dry.

Sunset closed her eyes, tiredness making itself apparent in the form of a yawn, and she blinked her eyes open to look at the clock above her door. Seeing that it was only just after 8, she grumbled with a frown. “I guess I should probably do my trig homework…” she mumbled, “then again—” she glanced towards her gaming setup before shaking her head, “no. Homework first, Shimmer.” Her shoulders slumped as she clicked the blow dryer off.

Sunset didn’t bother to gather her things as she trudged back up stairs and fished through her backpack for her textbooks and notepad, slumping down onto her bed with a grunt. She paused, looked at the messy sheets, and winced.

“Right. New sheets first. Homework second.”

She set her books on the floor and adjusted her shirt before she began cleaning, stripping the duvet and rolling it into a ball to toss over the railing. She bobbed her head along with the music downstairs, letting out small hums and tapping her feet as she went. After tossing all of her washing over her railing, she hopped down her stairs to the beat, jumping off her last step and landing on both feet as she shot her fist into the air. Sunset then turned on her heel, opened her storage closet, and dug through it for clean sheets.

Once acquired she set them on the back of the couch and moved to toss the old ones in her hamper by the bathroom door before she took the new ones back upstairs to dress her bed again.

Finally, she sat down with a satisfied sigh, pulling her books up onto her bed with her as she got to work on her notes from class.

She flicked through the pages, puckering her cheek as she scanned the dates. “Last week. Wednesday. Yesterday! Got it.” Sunset blinked at the page and tightened her lips, the small stick-figure drawing of Adagio staring right back at her with her small, black-dot eyes.

She groaned and rolled her eyes.

She set the book to the side and leaned over to pluck her phone from beside her lamp. Thankfully she had put the darn thing on silent and turned off vibrate, because Pinkie Pie had blown up her texts. She could only imagine what Adagio would have done with it if it had kept buzzing non-stop. Or to her. Or to her, with it—

She cleared her throat and typed in her passcode.

She had been tagged in a plethora of pictures, despite not being present, as if to make her feel more guilty. She frowned down at the caption. “We can’t be the bestie squad without our bestie</3”. 32 likes so far. 3 comments. None from the girls. Sunset sighed and tossed her phone onto her bed.

She rubbed at her forehead before running a hand through her hair and picking up her phone again to read through her texts, wincing at the 5 missed calls already.

“No,” she shook her head, “I told them I wasn’t going. I didn’t flake,” she said aloud. It was true! She had told them well in advance. It wasn’t like she had waited until the last minute and cancelled! They were being ridiculous.

She was pulled from her sulking by a wrapping on her front door and she paused for a moment to check the time. 9:13pm. She arched a brow.

She pushed herself up to stand, dropping her phone onto her bed before she made her way downstairs. She flattened her hair— adjusting ringlets that didn’t fall into place right— and gave herself one last look over in the mirror behind her door before she opened it with a polite smile. “Hello--?”

“Surprise!” Beamed Pinkie Pie as she leapt onto Sunset, wrapping her arms around her neck tightly. The other girls stood not too far behind, all holding different collections of duffel bags and backpacks, all looking equally as guilty.

“Wh- hey! Yeah, this uh—” Sunset chuckled awkwardly, “this really is a surprise!”

Pinkie pulled back after she was content with the hug and bounced in place on her heels. “Well! Did you get my text?”

“Uh—”

“Since you couldn’t make it to laser tag, we decided it would be super-mega fun if we had a sleepover!”

“I can, uhm, see that—”

“And since you didn’t feel like coming out-- we brought the sleepover to you, Sunset!”

Suddenly, she was ecstatic Adagio had taken a cab home.


Author's Note

so this took a while to come out! Are things getting tense between the girls? 🤔 stay tuned to find out!


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