Affairs of a Prince

by limelightu

Rating: mature
Tags: My Little Pony: Friendship is Magic, Romance, Princess Luna, Shining Armor, Sex
Length: 4340

When Cadance and Celestia take a leave of absence to travel to Saddle Arabia, there's only one mare left in the castle with Shining Armor. Will he be able to stay faithful to his wife despite living with an unusually frisky princess of the night

When Cadance and Celestia take a leave of absence to travel to Saddle Arabia, there's only one mare left in the castle with Shining Armor. Will he be able to stay faithful to his wife despite living with an unusually frisky princess of the night?

Published 2013-10-18 06:20:03 UTC
Last updated 2013-10-18 06:20:03 UTC

Chapter 1

"Farewell!" Luna waved her hoof towards Celestia and Cadance as they boarded their carriage bound for Saddle Arabia.

The two royal mares were going away on foreign business for a week, leaving Luna and Shining to take care of the castle. Shining's duties prevented him from leaving Canterlot too often, and Luna wasn't a fan of the sweltering heat in Saddle Arabia.

"Hurry back, you two!" Shining Armor chimed in, wearing a grin from ear to ear. He followed up his groan-inducing comment by blowing a kiss to his wife, which made her giggle.

The two princesses on board the carriage said their goodbyes once again, both of them were obviously excited. Cadance winked and blew a loving kiss of her own at Shining Armor. The royal guard pegasi that were pulling the carriage flapped their wings, began to trot, and then they were off in a flash; the already distant carriage illuminated by the slowly setting sun. The other guards supervising the takeoff quickly scattered, and Luna was left with no pony in sight except Shining Armor.

"I'll see you later for the private feast tonight, princess," he said, "I still have some guardwork to do."

"Understood," Luna replied curtly, turning to make her way back towards her royal living quarters, "We are delighted to dine with thou alone; 'tis a welcome change of pace." As Luna turned away, she paused momentarily. Her hindleg began to itch incessantly, and her thoughts immediately turned to Shining Armor. Celestia and Cadance were gone, and Shining would be all alone in the castle tonight. Her mind began to race with possibilities.

"Likewise!" Shining replied to little effect, his gaze gravitating to the princess' rump while she appeared to be frozen in place. For as long as Shining knew her, Luna had always possessed a rather plump backside. Over the past few months, however, it seemed to have gotten noticeably fatter. Shining figured that it was Luna’s long days of sleeping and long nights of staying locked in the castle with nothing but sweets to satisfy her appetite. The thing that impressed him the most, however, was the fact that Luna’s ass stayed taut no matter how much she ate- must be a benefit of those alicorn genes.

Admittedly, Shining found it difficult to resist thinking too much about Celestia and Luna. They were beyond a shadow of a doubt two of the most lusted-after mares in all of Equestria, and he got to see them at almost every waking hour. He already knew it would be a long week without Cadance there to satisfy his... needs.

Coming back to reality, he tore his eyes away from Luna’s plot as she disappeared back into the castle, and attempted to clear his mind of her succulent backside. He went back to guard duty, but he couldn't stop himself from fantasizing about what a night with Luna might be like with his wife gone. At least Shining knew she wouldn't be interested in him. That should help to keep his testosterone - and his marriage - in check.

Luna stepped into her bedroom and immediately walked towards her closet. She sorted through the many outfits, examining each one closely. Eventually, her gaze landed upon a sparkling black gown: it was Luna’s favorite in her entire wardrobe. The way it reflected moonlight was nothing short of spectacular, and she made sure to only wear it on special occasions.

The princess levitated the dress in front of her as she walked towards the mirror, and looked herself over. She used her magic to delicately slip the gown on; it complemented every curve of her royal body, albeit with her rear being much more pronounced than the last time she wore it.

After ensuring her dress was in order, Luna began to apply her makeup. After a few strokes of a brush, some powdering, and detailing, she was making a noticeable difference. The princess’s eyelashes appeared thicker, her coat was more vibrant blue, and her features sparkled in the dim candlelight of her bedroom.

“Most charming…” Luna whispered to herself, slipping into her shiniest hoof shoes and glancing at the mirror.

With a simple spell, Luna arranged her mane in an intricate pattern of curls and braids, which twinkled to match the rest of her outfit. Just in case the outfit wasn't good enough, Luna sprayed herself gently with some perfume; it was no accident that she chose to wear the same fragrance Cadance used- "Loving Lavender". And just as she was finishing up, she heard the familiar dinner bell ring out across the halls of Canterlot Castle.

Luna stepped out into the empty marbled hallway, and turned towards an intricately carved wooden door. She pushed it open, and stepped inside, the sound of her hoof shoes echoing throughout the room.

Shining, already seated at the table, turned his head and watched in awe as the door appeared to open in slow motion. In an instant, he felt his heart throb and his eyes hungrily run over Luna’s body. If looks could kill, Shining would've dropped dead. “H-hello, Princess,” he stammered, looking at Luna’s face to stop his eyes from wandering towards her sparkly, supple rump.

“Greetings, Shining Armor. Early as usual, it appears,” Luna simpered, slowly walking over to him. Her deliberately seductive gait caused her hindquarters to jiggle visibly. She sat herself down right next to Shining in Cadance’s empty seat at the dinner table.

“Yes, Princess. You’re looking lovely tonight.” Shining tried to reply in a calm tone, recovering from the initial shock of her entrance. He felt embarrassed, as though he were under-dressed at a fancy party. His cheeks flushed bright red, and the dining hall suddenly felt like it had caught ablaze. Despite the misplaced shame, Shining was also painfully aroused; he could feel his stallionhood growing even warmer than his cheeks and pressing up against his haunches.

"You're- ah, not going to sit in your seat at the head of the table?" Shining asked, looking over at her.

Quick to notice Shining's discomfort, Luna cracked a nearly imperceptible smile. "Nay, We would prefer to dine hither as Lady Cadance is absent. Would'st that be an inconvenience?"

"Oh! No, princess, not at all." Shining replied hastily, almost interrupting her. He glanced awkwardly down at the dinner table, then back up at her.

"Tell Us Shining Armor, how hast thou been faring as Guard Captain?"

"Uh, work's good. I just got off a few minutes ago."

"Oh?" Luna's ears perked up, "We could not tell- thou always lookest so handsome."

"Thanks..." Shining replied, blushing a little. Luna wasn't often one to compliment others on their appearance. Her attitude was markedly more playful than he'd ever seen before, "If I may, princess- You're looking stunning yourself."

Luna's ears twitched. She didn't think she'd get such a loyal stallion like Shining to mention her looks so easily. Maybe he was just being polite. "We thankest thee."

A troupe of castle kitchen servants quickly trotted out into the dining hall and set a bounty of leafy food in front of the two ponies, served with two glasses of the castle’s finest wine. Luna received an additional platter stacked high with rich, moist chocolate cake alongside her meal, as per prior request.

While Shining had his guard down, Luna had to take her chance. "And Our makeup? 'Tis wonderful, is it not?"

Shining stammered a little. "Oh, yes it's very nice, but I- um-"

"Yes?" Luna looked at him with concern.

"I like it when mares don't wear makeup." he muttered, levitating over a forkful of lettuce and chewing on it.

"Hm, thou thinkest We would be more attractive... without makeup?"

Shining's eyes opened wide, panicking slightly. It dawned on him that he was digging himself into a very delicate situation. "Princess, you always look attractive- it's just... a preference for me and- That's a lot of cake." he began to shove more lettuce into his mouth to shut himself up.

"Shining, where hath thy manners gone?" Luna chided playfully, using her magic to overpower Shining's grasp on his fork. Luna gently stabbed a piece of lettuce and held it out in front of his mouth as though he were a young colt.

Shining blushed harder as he reached out to eat it. "Mm..."

"Now, Shining. Inform Us, how attractive are We?"

Shining chewed and swallowed. "Don't tell Cadance, but I think you're v-very attractive, Princess."

"Lady Cadance is not present, Shining. We may discuss anything We please. It shall remain Our secret..." Luna trailed off, feeding Shining some more lettuce and simultaneously enjoying her own meal.

"In that case, Princess, I think you're beautiful. I just- thought you'd never be interested in my opinion."

"You judge thyself too harshly." Luna smirked, levitating her glass of wine to her lips and taking a sip.

Shining did the same with his own glass. In that moment, when the wine touched his tongue, something odd happened. He vividly pictured Luna presenting her plump ass for him, then he imagined the sensation of mounting her cushiony rump and rutting her on top of the ornate table. His cock began to throb painfully. He thought marriage was supposed to alleviate these sorts of thoughts, but the exclusivity only made his adulterous fantasies all the more vivid.

Luna took more sips of the wine while devouring her cake, savoring the interplay of flavors between the sweet chocolate and the fruity, somewhat bitter drink. After a few minutes of tense silence between the two, Luna stood up tall. She swished her tail to draw Shining's eyes to her plot, which was framed flawlessly by her tight dress. "We shall retire to Our bedroom posthaste," Luna said, "Wouldst thou care to join Us? The castle does feel most barren without Lady Cadance and Our sister present."

Shining took another sip of wine, staring directly at Luna’s rump. “Yes, Princess," he said without hesitation. Shining got up slowly and deliberately, trying his best to conceal the massive erection held between his legs. His body was making its intentions quite clear, but Shining knew not to get his hopes up; there was no way Luna was suggesting sex by inviting him to her bedroom. More likely, she just wanted some company. Perfectly understandable. He would get in her room, comfort her, steal a few harmless glances at her plot, and then take care of that boner he was sporting by himself in the bathroo-

"Shining! Cometh!" Luna beckoned from across the dining hall; Shining Armor's hooves appeared to be affixed to the floor and he looked as though he were concentrating intensely.

"Sorry, Princess!" he called back, trotting over to Luna's side. The two ponies walked briskly down the short hallway to Luna's living quarters. There wasn't a guard in sight.

Upon reaching the intricately carved and imposingly tall double doors, Luna's horn glowed. She used a very specific spell to unlock the doors and swing them open dramatically, then stepped inside her room. The walls, furniture, and bed sheets were awash in deep, vibrant blues with accents of bright gold and yellow tones. It was unsurprising that the princess of the night lived in a room that embodied the moonlit sky so perfectly.

"Shut the door, Shining Armor." Luna stated in a commanding tone.

Shining used his magic to do just that, standing in front of Luna as she looked down at him. A smirk crept across the princess' face, and Shining watched her horn glow once again. He then heard the distinct clicking sound of the doors locking behind him.

"Tell Us, Shining Armor, what bringeth thee to Our quarters?"

"You- uh... said you wanted company." he muttered softly.

"Oh, come now. Thy erection wert all too visible for Us to believe thy story." she turned away from him and took a few steps forward, stopping to glance over her shoulder. The fancy gown she was wearing twinkled brightly. "'Tis a fine evening. Thy compliments hath not gone unheard, We hath noticed thy fascination with Our backside, We hath drunken a spot of wine, even fed thee in a most sensual manner. Tell Us again, what bringeth thee to Our quarters?"

"I- I-" Shining Armor stammered, his erect, sex-starved cock betrayed him and throbbed lustily, "I just wanted to- keep you company. And get a better look at your beautiful plot," he admitted.

His conscience was screaming at him. "You're supposed to be loyal! The most loyal! Your entire life was predicated on loyalty! Why would you blow it now?"

"Beautiful, is it?" Luna asked, shaking her flanks for him.

"Oh, that's why," Shining thought to himself, biting his lip as he stared. "Yes- please don't tell Cadance," he muttered aloud.

"Fear not, We shan't tell Cadance." Luna said, using magic to slide the silky, shimmering dress over her head before tossing it away. "However, for as long as thou art present in Our room, thou must abide by Our rules."

Shining couldn't stop himself from gulping nervously. Luna was normally undressed, but seeing her strip for him felt all the more lascivious. "What are the rules?"

"Firstly, We are thy mistress and thou shalt address us as such. Cadance shan’t be mentioned unless We permit it."

"O-ok."

"Secondly, thou must worship Our plot as though it were the finest thou hath ever laid eyes upon."

"That- shouldn't be hard, m-mistress."

"Thirdly and finally, thou shan't reach climax 'til We permit it. There shall be great consequences should you break these rules, Shining Armor. Are We clear?"

"Yes, mistress."

"Good." Luna backed up until her rump was inches from Shining's face. She gave it another seductive wiggle, then flicked her tail up. "Go on, We are growing most impatient."

Shining hesitated for a moment, inhaling the princess' lusty scent as she lifted her tail for him. This felt very wrong, but at the same time it was downright irresistible: Shining's dirtiest, darkest fantasies were about to become reality. He took a bigger whiff of Luna's marehood, then dug his face between her cheeks. Their warmth and softness was almost suffocating. He could feel beads of sweat dripping down Luna's flanks. He pressed his hooves deeper into her cushiony plot, then he flicked his tongue out, licking and kissing Luna's plothole as she fidgeted in mild amusement. Shining began to thrust his hips back and forth while slurping away at Luna's tight hole, completely losing himself to his own carnal desires. His scorching hot member slid across the silky fur of one of Luna’s hindlegs, practically crying out for attention.

"So eager!" Luna smirked, "We would wager thou hath never worshipped Cadance's pitiful, little plot before..."

Shining moaned softly into Luna's backside. She was, of course, exactly right. He was still committed to Cadance and loved her dearly, but she would never be able to give him an experience like this. His tongue worked its way across, then around Luna's plothole. It was the most sickeningly arousing thing he'd ever done; so much so, that it sent him into sexual overdrive. Precum leaked from the tip of Shining's member, which was already aching from the stimulation. Luna rested her starry tail between Shining Armor's ears, but the only things on his mind were the grotesquely erotic slurping noises his tongue was producing.

"My, We did not expect such enthusiasm!" Luna moaned, biting her lip and blushing. "We are most impressed, Shining Armor. Perhaps thou art able to bear more rigorous teasing?"

"Yes, Mistress. Please, more..." he mumbled, pulling his head back and taking a breath away from the unbelievably warm crevice between Luna's flanks. Just looking at her plot again was enough to make Shining want to dive back in. Suffocating in Luna's rump was probably a better fate than having this fling uncovered by his wife, anyway.

Luna nodded and smiled at Shining's pathetic begging. She put all her weight on her back hooves and began to tilt backwards.

By the time Shining realized what was happening, it was far too late for escape- not that escape was on his mind. Luna's plot moved closer and closer to his snout until it was practically in freefall. In the blink of an eye, Shining Armor's face was pinned under Luna's fat ass. "Dost thou enjoy it down there?" she asked playfully upon landing.

"Mmph!" was all Shining could exclaim in reply. He landed on his back, with his hindlegs extended and his turgid member proudly standing at attention.

Shining's hooves massaged her hefty rump. His aching, veiny cock throbbed while thick pre leaked from its tip. Luna was confident his muffled reply was a resounding "Yes".

"Consider thyself fortunate to be the nearest available stallion whilst We are in heat..." Luna giggled, rubbing her hot, moist plot across Shining's snout.

"Hmmph!?" Shining blurted out, his voice completely muffled by Luna's hefty ass. In this position, he was forced to breathe in the princess' overwhelming, musky scent.

"Indeed, We hath been craving this moment far more than even thyself." Luna looked down at Shining's cock, and decided to give it a little extra attention. Her horn sparkled, and a starry aura instantly surrounded his stallionhood. Using unrivaled finesse, Luna’s magical aura pressed at the base of his shaft, and massaged his cum-stuffed balls.

"Mm..." Shining groaned beneath Luna; his body was completely at her whim. He started flicking his tongue out to lick at her plot once again. This time, he could feel her mare juices leaking onto his snout, which he promptly licked up. The taste was incredible- like ripe, sweet blueberries combined with the powerful scent of her sweaty rump.

Luna lustily grinded her butt across Shining’s face, magically toying with his member. “How much have We longed for a stallion such as thyself to pleasure Us…” she said dreamily.

Shining bucked his hips up and down from the intense stimulation Luna was giving him. It wasn’t enough to reach climax, but it caused his tip to burn fiercely. “Ooh…” He let out a moan which was barely audible from under Luna’s backside, then licked at her plothole a few more times.

“Remember Our rules, Shining Armor. We would hate for thee to get too hasty…” she muttered, bouncing herself up and down on Shining’s face. Luna’s senses were heightened thanks to her hormone-fueled lust. She felt the intense heat radiating off her pussy, as well as the slight coarseness of Shining’s tongue sliding across her nethers.

“Mistress, it’s h-hard to breathe under here,” Shining panted, his chest rising and falling rapidly. He began to feel light-headed, but it didn’t stop him from thrusting into Luna’s cock-stimulating aura.

Luna smiled and sat on Shining for a few more moments, watching him pant faster and faster until he began to struggle. On a whim, she lifted her plot, and immediately heard Shining inhaling large gulps of air.

“Thank you, mistress…” he mumbled, lying on his back and breathing hotly.

“Enough lollygagging, Shining Armor. We hath so much more to accomplish!” Luna hopped up on her bed, glaring at him expectantly.

Shining got on all four hooves, and felt Luna’s magic stroke his member as he looked at her. The pet obediently hopped up onto his mistress’ bed, and gave her left flank an appreciative kiss.

“Thou learnest quickly,” Luna giggled, swatting Shining away with her tail, “Aren’t We far superior to thy mundane wife?”

“Yes, mistress…” Shining replied, his cock receiving a lengthy stroke from Luna’s magic. It was powerful enough to make him shudder visibly.

Luna laid down on her bed and stretched out her hindlegs enticingly, but kept them held tightly together. “And are We not the object of thy deepest-seated desires?”

“You are, mistress. I’ve been dreaming of rutting you for… longer than I can remember.” He received another forceful stroke across his length, “Ohh…”

Luna rolled onto her back and spread her legs, completely exposing herself for Shining. “We wish for heirs, Shining Armor. As many as thou art able to provide…”

“W-wait, heirs?” Shining felt his member go from red hot to icy cold in an instant. Luna could torture his stallionhood just as easily as she could pleasure it. “O-okay! Heirs! I’m sorry, mistress!”

“We hope thou hath been saving thyself… We wish to be filled with thy seed.” Luna let up on her spell, resuming the heated massage of Shining’s member.

“I-I haven’t cum in weeks," he admitted.

“Excellent. Commence the rutting, Shining Armor,” Luna smiled at him in glee.

With that, Shining nearly tackled Luna. He bore down on her like a ravenous animal, kissing and licking at her snout and neck while positioning the tip of his erect cock in front of her slit.

Luna gave a few kisses back to him, “Mm… Worship Us, pet.”

“You’re the most beautiful creature in Equestria,” Shining said, penetrating Luna’s marehood slowly, “I want to serve you, impregnate you, and let my face be your throne of choice,” he placed a passionate kiss on Luna’s lips, then pulled back. He felt like he was about to cum just by sticking the head in.

“Such a pathetic colt you are...” Luna grinned. She felt her marehood leaking lubricant all over her sheets, her eyes affixed to the white-coated stallion whose body was pressed on top of hers.

Shining thrusted deeper into Luna, images of his wife flashing through his mind before being replaced by sheer ecstasy. “Yes, mistress! I want to serve your every whim if I'm rewarded by being sat on…”

“Cum inside and thou shalt be sat upon for hours. Thou may even lick thy messy excess from our marehood…” she giggled joyfully, her plan now coming to fruition.

Shining emitted a low grunt and hilted himself inside his mistress, then pumped in and out. Each thrust sent some of Luna's love juices dribbling out onto the lavish bedsheets. “Thank you, mistress,” he groveled, looking down at her bemused expression. There was a glint of playfulness in her alluring, azure eyes, but he could tell she meant business; he was going to give her a foal.

Luna looked at Shining intently, and pressed her muzzle to his, and kissing him with her usual grace and poise, even while she was being spread wide and stuffed full of stallion cock. “Faster, pet. We wish to see the fullest extent of thy lust.”

Shining nodded and drove his thick rod deeper into her. "Oh, Princess Luna... I can't. I'm getting c-close," he panted, slamming his hips into Luna's voluptuous body.

"Good," she mumbled under her breath, clamping down on Shining's cock with her inner walls and milking it for his precious seed. "Give Us everything..."

Shining gave in to Luna's hot, pulsating sex. It was too much for one stallion to bear. He collapsed onto Luna's soft chest, his backside still thrusting in and out. "Gonna c-cum!" he sputtered out, grinding his member further into Luna's slick passage and yielding to the sweet embrace of climax. He shot his load deep into Luna's love canal, the tension and aching of his stallionhood melted away. "Mmph!" he groaned, repeatedly kissing Luna's body as he spurted globs of his ropey spunk into her.

Luna made a nonchalant sigh, as though she had just settled into a nice, warm bath. "Well done, Shining Armor," she said, squirming under his weight. "We may finally produce Our first heir!"

"H-heir?" Shining asked dreamily, letting himself relax on Luna's belly. His eyes suddenly shot open, "Wait, heir?!"

"That is correct," Luna giggled, feeling a bit of Shining's cream pie squelch out of her velvety folds and dribble onto the bed. "We never anticipated thou being so agreeable in the matter. Now, We request more worship of our rump! Lest Cadance hear of thy infidelity."

That was all Shining needed to hear. He pulled out of Luna, then bent down and began to kiss her plushy butt all over.

Luna chuckled to herself, "We thought as much."

Shinning breathed in deeply, then licked up and down Luna's plot. Maybe this wouldn't be such a long week after all...

Throughout the week, Luna used and abused Shining as her personal plot-loving slave. By the weekend, her ass was sore from at least a dozen rutting sessions in the span of a few days- each one ending with Shining filling up her marehood with his hot seed. Luna hadn't ever had such a dedicated lover before. She knew exactly how to tease and toy with him. He loved every minute of it.

Shining dug himself deeper into an inescapable hole with each passing day. When he wasn't having sex with Luna, he was worried she'd tell Cadance. When he was having sex with Luna, it put his anxiety at ease. Needless to say, he had a lot of sex with Luna.

By the time Luna began to tone down her forcefulness in bed, Cadance and Celestia were due to return home in less than a day. He hoped he wouldn't have a nervous breakdown the moment he saw his wife step out of the chariot, but the possibility wasn't far-fetched. Shining Armor didn't sleep the night before Cadance's arrival. He paced back and forth for hours at a time, only stopping when he got called into Luna's bedchambers for some last-minute lovemaking.

"One last time, Shining Armor..." Luna said at midnight, then again at 3 in the morning, then again at 5 in the morning.

At daybreak, Shining's mane was messy, and he wore visible bags under his eyes. He trudged outside in time to see Cadance and Celestia's carriage descending into the Canterlot Castle courtyard. The sight of his wife's familiar pink coat and pastel-colored mane made him feel like vomitting on the spot. He held it in, cordially introduced himself to Celestia, then made his way to Cadance.

"Hey, big boy!" she growled with a flirtatious smirk, "Miss me?"

Shining swallowed nervously, and looked her square in the eyes. "You have no idea..."