Spike's Polyamorous Honeymoon

When they were finished congratulating Twilight after her rather interesting display during her coronation, Celestia and Luna proceeded to walk away from the after-party back into the castle. After walking inside, they both immediately stripped out of their formal wear and walked into their living corners.

“Ugh, I thought it would never end.” Luna said in a relieved tone.

“I know. Seeing Twilight fumble during her coronation was one thing, but watching her trying to improvise with her friends was so embarrassing.” Celestia said after seeing her former pupil’s disastrous coronation.

“I can only be glad that this will be the last time we will have to participate in these dreadful ceremonies. Anymore of this and I would feel the nerve to transform into Nightmare Moon again.” Luna said as she turned on her video game console with her magic.

“You and me both. But now that Twilight has replaced us, we no longer have an obligation to join in on any political nonsense or address any issues with the city! In three days' time when Twilight settles into her new role as the Princess of Equestria, we are free birds~!” Celestia gleefully said as she trotted with joy.

“Right. I just have one question.” Luna said in an unsure tone.

“Hmm? What is it, Luna?” Celestia asked, confused by her sister’s worry.

“What will we do if Twilight has a problem with sorting out the problems and some powerful force tries to take over Equestria like those last three hooligans we fought and turned to stone?” the Moon Alicorn responded.

Hearing this, the Sun Alicorn scoffed at her sister and said,

“Oh please, sister. This is Twilight we’re talking about here. If she can handle a whole-scale invasion from a Changeling, Centaur, and an utterly deranged Pegasus Filly, she can handle the entire Kingdom of Equestria. Besides, she has her friends to fall back on whenever she doesn’t get her way.”

“‘Tia, that is brilliant! You really have thought of everything when our retirement was coming around!” Luna said, amazed by her sister’s thinking.

“Do you see, dear Lulu? We have nothing to worry about~.” Celestia said before walking over to the couch to kiss her sister.

“Indeed~. Now that we are free of responsibility, are you ready to make the big announcement to our child~?” Luna asked before kissing her sister back.

“I wouldn’t think anything of it~. I have already arranged for him to come here after he was finished with helping Twilight~. He should be here any minute now~.” Celestia said before hearing a knock on the door.

“Speak of the Umbras~. Come in, sweetie~!” Celestia continued as she watched her son open the door.

Spike immediately opened the door and entered the living quarters.

“Hey ladies, you said you wanted to see…” Spike said before seeing his adoptive family in the nude.

Upon seeing them like this, Spike already figured out that they had an idea. Willingly coming over to their side, the Royal Sister grabbed the young dragon and stuffed him into a breast hug. Upon seeing that he was secure, Celestia asked in a flirty tone,

“Spike, remember when you were younger and you would often sleep in bed with me, you said that you hoped to marry me someday~?”

“And that one time you made a promise that you would find a way to make me happy before we had sex in the castle courtyard that one time~?” Luna asked in a flirty tone as well.

“Yea…?” Spike asked with his mouth completely muffled.

“What would you say if we decided to marry each other with no interference from anypony or any other creature~?” Celestia proposed while continuing to hug Spike with Luna.

Upon hearing this idea, Spike's nerves immediately flared up like a firefly. He instantly fell in love with the idea of getting married to Celestia and Luna. In fact, he had always of one day marrying the Royal Sisters and living near the beach where the sun always shines and nopony can bother them. However, there was one thing that bothered Spike.

"Don't marriages usually require witnesses or something?" Spike asked in an unsure tone, albeit still muffled.

“Oh please~. Who needs witnesses when all we need is each other~? Besides, Twilight will be too opposable to think we could marry each other like it’s okay~. Why should we need approval when we are gods~?” Celestia haughtily proclaims while squeezing Spike.

“But no need to worry~. We have already made arrangements for such an occasion~. Fluttershy and Rarity will be our witnesses~.” Luna says while squeezing Spike with her sister.

“Huh!? Fluttershy I can understand, but why Rarity!? You know she’s a gossip pony!” Spike shouted, now feeling doubtful.

“Oh, don’t worry~. She promised to keep quiet if we promised to do something for her~.” Celestia said in a sly tone.

“Hmm? And what’s that?” Spike asked in a confused tone.

“She promised to keep it all a secret if we choose not to bankrupt her entire fashion line~.” Luna said with an evil smirk.

“That’s blackmail!” Spike shouted once more, pointing out the cruelty.

“True, but which outcome would you prefer~? Risking our future and potentially losing you to Twilight’s custody~? Or having just two ponies who won’t say a word about our secret arrangements~?” Celestia asked with that same evil smirk.

While Spike knew it was completely immoral to blackmail Rarity, let alone lie to Twilight and her friends, he understood one thing. Twilight had very strong reservations about Spike’s pseudo-incestuous relations with the Royal Sisters. And if she were to find out about their plans to marry each other, she would’ve been inclined to take Spike back, even if it meant spurring the wrath of her mentors. He grimaced at that thought and for good reason; the Royal Sisters didn’t rule Equestria just for the fun of it. They literally had the power to end Equestria if they so wished. And they would so easily do it if anything was taken away from them. Especially if their former pupil decided to take him back once and for all. For that reason, Spike was inclined to listen to his lovers.

“I guess you’re right. Twilight not knowing would be the lesser of two evils. Just promise me that if she ever finds out-” Spike said before getting kissed by Celestia.

“Do not worry, child~. We shall deal with Twilight when the time comes~. But for now, let us bask in our love for one another while the evening is young~. Also, Fluttershy and Gabby will be there~.” Luna said before pulling Spike’s face towards her to kiss him.

The trio fell into their session of love-making while Twilight and her friends were spending time with each other. All the while not knowing where Spike or the Royal Sisters were. Although Fluttershy, Rarity, and Gabby had a pretty good idea of what they were doing behind everypony’s backs, they dared not speak up out of receiving the wrath of the Royal Sisters. But that would be another subject that would arrive in the next few days.