Rarity woke up late the next morning to find that she was alone in her bed, sitting up and looking around her bedroom as she looked to the empty space beside her where a certain cyan pegasus had ended up spending the night, letting a slight sigh leave her lips and guessing Dash must have gotten up and left earlier since she said she had to be up for work yesterday evening. The unicorn cringing in slight disgust as she looked over herself, seeing that she was still practically soaked to the bone in her own sweat from the events that took place last night between her and Rainbow Dash, knowing that her normally very tidy mane was no doubt a mess at the moment, and the lingering stench of her arousal still hanging in the air, causing her to turn up her nose a bit, while giving her the clear message that she really did need a shower right now.

Feeling quite ashamed of herself that she had actually let this happen, as she quickly made her way to the bathroom, she knew this wasn't how these kind of mornings usually go for her. 'Oh what are you doing Rarity, get a hold of yourself, it was just how Rainbow said, 'just a bit of fun' because we clearly had nothing else to do that would keep that damn mare entertained for more than a second,' she thought, standing in the shower, not being fazed by how freezing cold the water was at the moment and just let it run down her back, cooling her whole body slowly, while the unicorn seemed like she was going off on a bit of a tangent when she was reminded of how irritating Dash was last night.

'It clearly didn't mean anything to her, so it shouldn't mean anything to me either, after all it's not like this is my first time going through this, I've slept with my fair share of stallions before and haven't really thought about it or felt anything towards them afterwards, so this shouldn't feel any different to me...' she thought with a confident nod, however soon pausing on her thoughts as she looked back on all that had happened last night between her and Rainbow Dash and closed her sapphire eyes, letting the cold water from the shower soak her untidy mane and cause it to stick to her skin.

'But then...why did it feel so different to have sex with her? Was it because she's a mare? Because she's a close friend of mine? Or...was it simply because it was Rainbow Dash that I ended up doing all those things with? I...I just don't get it, what caused me to act like that with her, to act so different in that situation? Just how...how did she make me so...so...' Rarity wrecked her brain, trying to figure out how she had let things get as far as they had last night, and why she reacted the way she did, clearly not understanding why having sex with Dash felt completely different from having sex with any stallion she had been with in the past.

Pausing on her thoughts again however as she shook her head frantically, trying to push all of her memories from the night before to the back of her mind and forget about them, after all she knew she shouldn't be spending all of her time thinking and reflecting on Dash and what had happened between them, she had much more pressing matters that she needed to be worrying about right now. 'I shouldn't be focusing on all that now, I still have those last few dresses that I need to get finished after all,' she nodded to herself, knowing that she should just get started on the outfits that she wasn't able to finish last night, hoping that her thoughts and questions about a certain cyan pegasus would just stay at the back of her mind as she soon quickly grabbed some breakfast, and was determined to get back to her unfinished dresses from yesterday.

....

Even though Rarity did plan to be very productive from that moment on for the rest of the day, that unfortunately not seeming to be the case for her, as it was already coming close to being late in the afternoon and she had tried all she could to concentrate on getting the unfinished dresses all done, but only having been able to get a couple completed, while all the others were still left hanging, waiting on the many mannequins in the boutique to be tended to.

The fashion pony stopping what she was currently doing as she looked around at all the outfits she still had to finish, and gave out a long, heavy sigh seeming like she just couldn't focus on what she was meant to be doing right now. 'Taking a break is the last thing I should be doing at this moment, after all I still have so much I need to get done, and I've done hardly any of it. Getting all these dresses finally finished, calling up the clients that I need to get back to, checking in with Sassy Saddles to confirm the details of what our next meeting will be about...I haven't even arranged when it should be yet,' she thought surprised that she had somehow suddenly become so distracted from the tasks that she had planned out for today, and was actually really glad it had been quite the slow day for her customer-wise, meaning that at least she didn't have to add anything else onto her list of things she most likely wasn't going to get done today.

'There are so many different things I could be doing right now, but...but my mind just keeps reminding me of everything that happened between Rainbow Dash and I last night. It's all I'm able to think about...no it's like that's all I want to think about...this shouldn't be this hard so...why...why can't I just forget about it all?' the unicorn wondered as she found she just couldn't stop those thoughts and unanswered questions from coming round to the front of her mind over and over again, 'Why did I let her take things that far? Why didn't I resist or say 'no'? Why did I just completely submit to her? Why wasn't my own body listening to what I was telling it to do?' Rarity thinking over all of these endless questions, while still having absolutely no idea how she was going to find the answers to any one of them.

'And what about that 'bet' that she was going on about, was she really serious about me being her...'slave' for the next three days?' her mind seeming to be filling with more and more questions by the minute, and it seemed she just didn't have a single answer no matter how much she thought about them all, as they were all just beginning to give her a headache, with how fast they were causing her head to spin at the moment, so much so that she just couldn't think about anything else right now until her mind got the answers it wanted, which she obviously wasn't going to get by the looks of things.

'Why can't I stop thinking about it all? Why can't I stop thinking about...Rainbow Dash? It's like I want her to be here right now, like I need her here, why am I so drawn to her like this? Just what...what is happening to me?' she sighed, leaning against the wall and hanging her head low, blushing slightly when all she could seem to think about was Dash and all that they had done to each other the evening before while being stuck in the boutique together for the whole night. While the unicorn felt like she was quickly losing herself, resting her hoof against her forehead, when as if on cue she heard a few light knocks on her front door, followed by the sound of someone entering into the boutique, causing Rarity to lift her head a little, wondering who had come by for a visit and hoping it was only a customer who she could deal with easily enough, and get them to leave her be rather soon.

However as she stood up straight to go and see who was at her door her eyes suddenly widened when she heard a very familiar voice calling out to her from the entrance of her home, "Rarity, are you here?" recognizing the raspy voice of that cyan pegasus instantly as it caused her to almost automatically snap herself out of the current state she was in and quickly shook her head, composing and not focusing on her thoughts for the moment, while she left the room where she often worked on making her outfits, 'Speak of the devil,' she thought with a slight roll of her eyes before she came rushing into the entrance of the boutique to see what the other mare wanted right now.

"Rainbow Dash what are you here for, do you need something?" Rarity asked her voice having a bit of a nervous tone to it as her mind was still spinning with her thoughts about last night, but it being slightly worse for her to keep herself from focusing on them, since the pony who was the cause for all these unanswered questions and endless reminders was now standing right in front of her.

The cyan mare also looking a little nervous at the moment, causing Rarity to raise her eyebrow and seem slightly curious, while Dash gave her a small smile in response, "No I...I just wanted to thank you for letting me stay here last night while that storm was going on, after all I'd likely be a goner if you hadn't convinced me to stay and stopped me from trying to make it back to my own home," she stated, as she glanced away from the unicorn, and Rarity just let her lips from into a smile, nodding back to the pegasus a moment later.

"You're welcome Rainbow, it really was no problem and I'm just glad you finally agreed to stay after you stopped being so stubborn," she replied, softening her expression and causing Dash to chuckle nervously in return, as the unicorn felt glad that this was hopefully all the other mare had come here for, meaning that she would probably leave her in peace soon enough so she could luckily sort out her thoughts and just find a way to get back to the tasks she still needed to get done some time today.

But that not seeming to be the case after all as Dash nervously looked down to the floor for a moment and rubbed the back of her left fore-leg with her right hoof, while her toned lowered slightly and caused Rarity to look back to the cyan mare with a wondering expression, clearly seeing that the pegasus was hesitating as she bit her bottom lip before finally coming out with what she wanted to say now.

"Also...about last night...I should really apologize for the way I acted, I never intended to take things that far. I guess I just don't know when to stop sometimes..." she trailed off, still glancing away from Rarity and smiling nervously, it obviously seeming like she was hoping the other mare wouldn't be mad at her for all that had happened between them last night. While Rarity felt her body tensing up a little when she heard Dash start to mention the events that hadn't left her alone all day, knowing that her thoughts and constant memories of last night would press on her already spinning mind even more if she let the pegasus continue to talk about the subject and so quickly thought of something to divert their attention from that certain topic.

"Oh you don't need worry about all that...it was just 'a bit of fun' like you said right? Just forget about it okay," she simply stated in what she hoped was a nonchalant tone of voice, as she only wished she could do the same as what she was telling Dash to do at the moment, causing the cyan mare to widen her eyes and look a little surprised by Rarity's reply, but soon she let out a deep sigh of relief and nodded back to the other mare, seeming glad that the unicorn wasn't angry with her over everything that had ended up happening yesterday evening as the pegasus thought she might be.

"And it's not like you were serious about that 'bet' or anything right?"

Rarity asked as she did seem more nervous now, hoping that Dash would just agree and soon leave so she could finally just stop trying to figure out the answers to all the questions spinning around in her mind and luckily put all this behind her in order to just get back to the things she actually wanted to focus on instead. However causing the pegasus to just raise her eyebrow in response and shake her head, it seeming that she wasn't going to agree with Rarity much to her disappointment.

"But I was serious about the bet, I even brought a collar for you so that other ponies will know who you belong to," Dash stated as she took out a rather loose fitting collar from her left unfolded wing, causing Rarity to widen her eyes and look awfully taken aback, guessing that the pegasus must have been hiding that collar under her wing all this time.

'You have got to be kidding me,' the unicorn thought as she looked to the purple, diamond-studded collar with a small, golden tag dangling off the front that simply read 'belongs to Rainbow Dash', certainly seeming stunned at how serious the other mare actually was about this 'bet' they had made the day before, while Dash just looked unfazed however a slight smirk was soon beginning to form on her lips at the moment.

"You lost remember Rares, so you have to be my slave for these next three days," she reminded the other mare of the rules of their little bet, and causing Rarity to grit her teeth together, feeling like she was instantly becoming irritated over seeing that annoying smirk on the pegasus's lips again, glaring and rolling her eyes as she could clearly see that all Dash's nervousness from earlier was completely gone, and she was back to her teasing ways like how she was last night.

"Yes I know, you don't have to remind me. So...what does this whole being your 'slave' charade involve exactly?" Rarity asked as she too no longer seemed nervous at all, and really just looked annoyed at the other mare, although her mind was still buzzing with her thoughts and unanswered questions from earlier as they just wouldn't leave her alone unfortunately for her. But figuring she might as well find out the answer to at least one of her endless questions and see just what the pegasus had planned for her being her so-called 'slave', even though she felt she could probably just guess what Dash's reply would be.

"It's simple really, you follow me around town these next three days for a couple of hours, while wearing this collar and helping me to run a few errands I need to get done, you have to do everything I say and you must only call me by, 'Mistress Rainbow', all that doesn't sound too hard right?" the cyan mare explained with another smirk, already having a feeling that Rarity wouldn't agree to letting the pegasus humiliate her like that, and so expected for the straight-laced unicorn to act exactly how she did a moment later, shaking her head and giving Dash a death glare in response, as it seemed her guessing hadn't been far off from what she was thinking, although it was clear that she hadn't thought about the collar or having to call Rainbow Dash by something so embarrassing as what she stated.

"There is no way that I'm doing those things Rainbow," the unicorn simply said with a cold stare to the other mare, showing that she was clearly getting more and more annoyed with the pegasus as the moments passed, while Dash just frowned in reply and moved closer to Rarity, staring her down even though the unicorn was a little taller than her.

"I had a feeling you were going to try and back out, but you have to do as I say, it was part of the bet that we made, which I won," Dash basically just rubbing her victory in Rarity's face now, smirking to her again and nodding her head, while the other mare just rolled her eyes again and turned away from the pegasus, not bothering to put up with this anymore.

"I don't care, I do have things that I need to do as well today, and I don't have time to follow you around town, doing things for you that you're just too lazy to get done yourself," Rarity gave out a frustrated 'humpf' as she quickly began to walk off, leaving the entrance of the boutique, and returning back into the room where all her unfinished dresses were still waiting to be completed, while Dash just came following after the fashion pony.

"But that's the reason why we did all those things to each other last night, so-

"I told you to just forget about all that!" the angered unicorn raised her voice, as she turned back around to the other mare, and hoped that she would just stop all this nonsense and leave her alone already, however Dash not looking fazed at all as she simply slowly shook her head and walked to be standing a few mere inches from Rarity, staring her down again.

"But...I don't want to just forget about it all," she simply stated with a more serious looking expression now, causing Rarity to widen her eyes and seem taken aback, clearly not expecting the pegasus to say that, and it being obvious that she really didn't know what to say in reply, just looking confused as Dash softened her serious gaze and lowered her tone of voice a little.

"And I don't think you want to forget it either," the cyan mare added, causing the unicorn to look surprised, wondering just how this annoying pegasus was able to see through her so easily once again, not understanding just how she was able to read the thoughts she had rushing through her mind at the moment.

'She's...she's right...it's not just that I can't forget all that happened between us last night...it's like...I don't want to forget about it all,' she thought, biting her bottom lip refusing to let her true emotions show, while Dash just waited to see how she was going to reply it seemed.

"What...what do you mean?" Rarity asked as her nerves returned and began to show once again, turning away from the other mare, while Dash simply leaned into her more and smirked again.

"Well I could tell you seemed to enjoy all that we did yesterday,"

The unicorn quickly shaking her head in response and backed away from Dash slightly, "That's not true, I didn't enjoy any of it...there's no way that I would," she spoke in a rushed tone, causing Dash's grin to just widen, knowing she was easily getting to the other mare yet again.

"Lair,"

"Alright I enjoyed it a little, now just get out already will you?" Rarity raising her voice yet again as there was a clear light blush spreading across her cheeks at the moment, she not being able to hide it, while Dash easily noticed it and so just smiled and shrugged her shoulders in reply, seeming like she knew exactly what to do from here in order to get under Rarity's skin more.

"You don't possibly want to do it again, do you?" she asked, raising her eyebrow again and having a clear seductive tone to her voice, while causing the other mare to look taken aback and shake her head frantically in response, but Dash being able to see right through her it seemed.

"What? What would make you think something like that?!"

"You do!" Dash stated with a wide grin, knowing she was right and felt like she didn't even need a confirmation from the other mare, as Rarity just clenched her teeth together tightly, knowing she couldn't keep denying what she really wanted, when Rainbow already knew she wasn't being truthful right now.

"I might...want to do it again...with you,"

She whispered out, blushing deeply and still turning away from Dash, rubbing her fore-leg with her hoof as it was obvious that she really did want to try having sex with the pegasus again, convincing herself that it was only to find out just why Rainbow seemed to make her act so different to how she normally would with any of the stallions she's slept with before, although she also felt like she just couldn't deny what her body was telling her at the moment, 'she wanted this, she needed this'.

"So, you wanna close up shop and head upstairs to your room?"

The cyan mare simply asked with a smile, looking like she clearly already knew the answer that Rarity was going to give her, seeing the blushing unicorn just nervously turn back to her and nod her head slowly, finally giving into her desire it seemed as she caused Dash to just nod back to her, pecking her on her forehead, before they quickly made it obvious that the boutique was closed for the day, and made their way up to Rarity's bedroom soon enough.

....

The two mares not seeming to want to waste any time at all as once they had entered Rarity's bedroom it wasn't long before Dash had the unicorn pinned down on to her bed and was already standing over her, their lips being locked in a deep and passionate kiss, while the pegasus sucked on Rarity's tongue causing her to feel like she was willing to let herself completely submit to Rainbow yet again.

"Rainbow...Dash...mmm...Rainbow,"

Allowing herself to moan out the cyan mare's name a couple of times inbetween kisses and heavy panting, noticing that her mind was quickly going blank, causing her to widen her eyes and stop herself from melting into the moment, 'Just how did I let this happen again?' she thought as she couldn't help but blush deeply, while she turned her head away, breaking their kiss, and pushed her hooves against Dash's chest, making her pause and not continue to kiss her anymore.

Dash just raising her eyebrow slightly in a bit of a questioning way, as she just let the other mare push her away and wondered just what the unicorn had on her mind at the moment, waiting for her to say something to her, "Wait Rainbow...what about earlier? You were...just apologising for taking things between us this far last night and now...we're really going to do those things again?" Rarity asked in a nervous tone, already feeling like her body was very close to just submitting to the dominating pegasus above her, while she was still trying to hold on to her self-control and not give in completely to her desires, even though she couldn't deny how much she really wanted this to happen right now.

"Well yeah, but it's like how you said eariler, 'it's just a bit a fun' so I don't see why we can't keep doing it..." Dash simply stated, pausing as she lowered her wing a little and softly caressed the unicorn's stomach with her feathers, slowly moving them down to her left hind leg, causing Rarity to shiver all over in response, biting her bottom lip and holding back the pleasure-filled moans threatening to escape her, squirming against the pegasus's tender touches while the cyan mare just smirked down to her.

"Plus...I can just tell how much you like me doing these things to you,"

She whsipered out in a seductive tone, leaning down to Rarity's ear as she gave it a long, slow lick, causing the other mare to tremble and let a small whimper leave her lips, knowing there was no way for her to hold on to what was left of her inner-strength for much longer, feeling it all leave her and that very familiar paralyzed feeling beginning to quickly overwhelm her, while she just lay her head back on her pillow and couldn't find it inside herself to lie and deny that Dash was right, knowing that the cyan mare was already in the process of causing her to lose herself just like she had yesterday evening.

"You know there are many more enjoyable ways to have sex other than just having some stallion's dick inside you Rares," Dash said as she slowly leaned down and began to leave a trail of small kisses down the other mare's body, causing her to shiver and whimper slightly with every light touch her lips made against her platinum fur. Rarity feeling like she should push the pegasus away from her again, but finding that by now all her limbs had stopped listening to her, and would no longer do what they were told to, instead just staying completely still and allowing Rainbow to keep doing as she pleased with the unicorn's shaking body.

'It's happening again...my legs won't move, and it feels like I'm almost paralyzed. Every place that Rainbow touches or kisses or licks...it...it's all too much...I can't help but let myself just melt against her,' Rarity thought as she let out a deep sigh, not feeling like she had any fight left in her, and knowing she would no doubt just submit to the other mare's advances before long, "You...showed me that last night," she spoke out in a lowered tone inbetween heavy pants, while her whole face was stained in a deep, crimson red, and her entire body still trembled every so often as a instant reaction to the pegasus's soft touches and light kisses.

"Well...hooves aren't the only part of the body that I can pleasure you with,"

The cyan mare replied, causing Rarity to look a little pluzzed, wondering just what the pegasus had meant but before she got the chance to say anything at all she could feel Rainbow Dash traveling down her body again, and coming to a stop to lightly kiss and lick her inner-hind leg, smirking to the unicorn once again, as she widened her eyes seeming to now understand just what Dash was planning on doing at the moment.

"W-wait Rainbow Dash...what are you...Ahhh!!"

The unicorn not able to hold back her cries as she soon felt Rainbow's hot tongue licking her already soaked slit, causing her to gasp as her whole body shook with excitment, endless waves of intense pleasure rushing through her as she felt tears welling up in her eyes, not being able to stop herself from buckling her hips and thrusting against the other mare's licks and kisses, knowing that she had already succumb to her desires by this point, letting Dash continue to ravish her trembling body, with no more strength left inside her to even try and protest or resist anymore.

"Rainbow...you can't lick there...no...don't suck on it like that,"

Rarity whsipered out in a moaning tone, her voice beginning to get louder, as she felt the cyan mare being a little bit rougher and causing her to cry out in pleasure again and again, 'She's...she's licking me down there....nopony has ever done something like this to me before...and she keeps stopping to suck...on my clit, I can already tell how swollen she's making it...I never knew this...could feel so good...it's all too much...if...if she keeps going like this I'll...I'll...' the unicorn not being able to finish her thought it seemed as she just cried out over and over, getting louder each time while she already started to feel her climax building up quickly inside her lower abdomen, knowing she wouldn't last all that long if Dash kept going as roughly a she currently was.

"You seem to be quite sensitive down here Rares,"

The pegasus paused for a moment, as she smiled and licked her lips, tasting the other mare's juices and thinking that they were even sweeter than from how she remembered them being last night. Rarity just blushing deeply as she looked back to Dash's smirk and couldn't help be moan out her name louder when the cyan mare didn't give her the chance to respond, and instead just slowly slipped her tongue inside the unicorn's drenched entrance, thrusting deep and already being able to tell that she was getting close from the way her walls would keep tightening and clamping down on her tongue with each and every deep thrust inside her.

"Dash...your tongue's inside...it's...so deep...I can't...I can't take it..."

The platinum mare feeling like she was so close to brusting, thrusting her hips harder against Dash, as the pressure inside her abdomen just kept building more and more, until she felt like she couldn't hold back any longer, teetering just over the edge. However feeling a wave of unsatisfied desire hitting her as Dash suddenly removed her tongue from inside her and instead just went back to licking her slit slowly and tenderly, causing the unicorn to whimper for more and look back to the pegasus with a pout forming on her face now.

"Why...why'd you suddenly stop like that?" she questioned as she panted heavily, still feeling so aroused at the moment, while Dash just smirked to the pleading look she saw in Rarity's sapphire eyes begging her to keep going, but all she did was kiss the unicorn's stiff clit lightly and wink to her simply in reply.

"Well you're my slave now, and you have to do whatever I tell you to. So...I'm not going to let you cum until you beg me to, and remember, you have to call me 'Mistress Rainbow', otherwise I won't give you the release that your body is graving for right now," the pegasus explained with another wide grin, knowing she could easily get Rarity to call her 'Mistress' by denying her the intense orgasm that was still building up inside her at the moment, while the unicorn just gritted her teeth together and knew it wouldn't very long until she would end up calling Rainbow by that embarrassing title just so she could finally get the release that she felt she needed so desperately.

'Do I really have to do this? I could just not say it...but then...would she stop? Would me not doing as I was told make her leave me while I'm just on the verge of reaching my limit? I...I don't think I want to find out if Rainbow would really do that, after all I...really do need this right now...' Rarity thought this over in her mind, knowing she shouldn't be letting Dash get to her so much like she was currently doing, while she also felt like she just couldn't deny her body of the release it was begging her for right now.

"Come on Rares, it's simply really," Dash simply said as she continued to slowly lick the unicorn's slit, causing her to shake all over and bite back her moans, seeming that she just couldn't help but feel like she had to give into the pegasus, after all it wasn't like her body was giving her much choice in the matter, as she just panted heavily and whispered out the other mare's name.

"Rainbow...please...I...I...I can't...take anymore,"

"Then what do you say?"

The cyan mare asked with a smirk, leaning into Rarity's stomach and threatening to leave her asking for more, causing the panting and moaning unicorn to finally not be able to stand it any longer, feeling Dash just teasing at her overflowing folds with the tip of her tongue, following each one of them until she eventually heard what she had been waiting for.

"Please...I can't wait any longer...make me come...M-Mistress Rainbow please...let me come,"

The platinum mare begged in a low tone as she looked to the pegasus between her hind legs with pleading eyes, and causing Dash to simply smile and nod in response as she slipped her tongue back inside of Rarity's entrance and began thrusting deep, soon doubling her efforts and seeming to know where each and every one of the unicorn's weak spots were. Making Rarity instandly shut her eyes tight and raise her waist up from the bed, screaming out the other mare's name, while she threw her head back in absolute ecstasy being sure that this orgasm was even more breathtaking than the one she had last night, her body convulsing over and over again as what felt like endless shockwaves of bliss rippled through her veins, not seeming to stop for such a long amount of time. Dash making her ride out her orgasm until she finally collapsed on to the bed and was desperately trying to get air back into her lungs.

"You know you look really cute when you cum Rares,"

The pegasus said once she had sallowed all of Rarity's sweet juices, not having let a single drop miss her lips, as she licked her slit clean, before doing the same to her own lips, smirking down to the panting unicorn and winking to her, before she jumped off the bed, retrieving the diamond studded collar that she had left discarded on the bedroom floor until this point, picking it up and returning back to Rarity's bed with it around her hoof.

Clipping the collar around Rarity's neck as she didn't resist at all, still trying to recover from the extreme pleasure of her most instense orgasm she's ever had, panting heavily and struggling to catch her breath, while she just gazed back to Dash and blushed deeply, as the pegasus just nodded to her and kissed her cheek lightly.

"I think it suits you well Rares," she simply added as she soon stood over her again and pressed her lips to the unicorn's, Rarity just closing her eyes and letting a couple of tears stream down her face, feeling her heart pounding in her chest as she breathed a sigh of relief when she finally was able to come down from her high and not be gasping for air anymore.

'Rainbow Dash...what are you doing to me?' she asked inside her mind, as she just felt there was no more fight left in her and so just allowed herself to melt into the light kiss, while Dash soon deepened it and smiled when she heard the other mare give out a plesant moan and let her hooves do what they wanted as she embraced the cyan pegasus and knew she just couldn't deny how well Rainbow quite clearly had her trapped in her dominating clutches.

Author's Note

Looks like Rarity's first day of being Dash's 'slave' showed to be quite the...satisfying one for the both of them.

Thank you ever so much for reading.

KillerChainsaw ;)