Polyamory

It had been a whole week, and Luna’s actions still hadn’t caused the scandal she had feared. As Luna's fiancée’s had indicated, there was only excitement about another royal wedding.

This was surprising to Luna. She knew things were different, but she had expected that there would be at least some backlash. Had society changed so much that none of her subjects cared about a broken royal promise?

All the same, having been intimate with so many of the castle guard felt extremely awkward. She blushed from head to hoof when she thought about it, and more so when she passed a guard that had participated. Luckily, her fur didn't show her blush well.

Though they seemed to stare at her plot a lot more. She even saw a few of them licking their lips. Yet at the same time, they were respectful, and perhaps in a better way than before. It felt more like respect and less like fear than it used to.

Of course, she still dreaded the inevitable “I heard what you did” conversation with Celestia. Celestia was not prudish, but was very serious about things like royal vows. Luna still felt too ashamed to speak to her about it.

She was sure Celestia knew now anyway. This morning, Celestia had done little more than watch her across the table at breakfast. It was as if she was waiting for Luna to bring it up.

“Dear sister?” Celestia knocked at Luna’s bedroom door, breaking her train of thought.

Luna sighed, sitting atop her bed. She didn't even pretend to be doing something important. She tried and failed not to blush up a storm.

“You may enter,” Luna spoke more officially than necessary, which is what she did when she was nervous.

“Ah, that official voice,” Celestia chuckled as she came inside. She slid the door closed behind her. “Sister dear, I have heard some interesting rumors, for which I do not judge if they are true...” Celestia approached the bed and climbed atop it with Luna. “But I would like to know if they are true, because if they aren’t, I need to start pulling out tongues.”

“You should not jest about the non-consenting removal of body parts,” said Luna. “But yes, I have broken my vow of celibacy, several times... several dozen times. It was a long night.” She cleared her throat, still unable to make eye contact. “I apologize for not coming to you directly, but I was uncertain of how to breach such a conversation.”

Celestia hugged Luna close, before slowly laying upon her back on Luna’s bed. Luna followed her, settling atop her. Celestia’s hind legs splayed and her front legs grasped Luna’s shoulders. If Luna had a stallion's equipment, it would be an appropriate position to use it, but they avoided doing that with one another outside of kinky dreams that Luna gave Celestia.

This sort of sisterly snuggling wasn’t anything out of the ordinary for them. Luna wrapped her wings against Celestia, while Celestia spread her wings further to cover then both.

“I cannot say that I am comfortable with your actions,” Celestia gently glided one front hoof down to rub against Luna’s belly. She pressed at the spongy flesh about Luna's breasts. She tilted her head to catch a kiss between her words. “But it is your body to do with as you wish. Even carry a foal, I hear?”

“I am,” Luna said, after a brief but deep kiss with Celestia. “It is Shining Armor’s, with Cadance’s permission of course... in fact with her encouragement.”

The two continued to exchange eager kisses between their words, lapping at each other’s gums. Their hooves explored each other’s familiar form, and their hips gyrated against one another, slits slathering one another with moisture. Above it, their breasts smushed comfortably together. It was a rather casual make-out that didn’t interrupt their conversation.

“Do you intend to join their union?” Celestia asked, “I do not like the idea of you being in somepony’s harem, regardless of how much I like her.”

“It is not a harem,” Luna said defensively, “This has been discussed; we shall be equal partners in any such union.”

“Do you just want to outrank me? Is that it?” Celestia licked Luna’s nose teasingly. “If you marry, you can officially take the title of Queen.”

“I would not take such a title if my sister did not share it,” Luna licked Celestia’s nose in return. “Though, I would warn you: Cadance and Shining intend to make an attempt on your purity as well, likely at a time when you would be weak to such actions.”

“You make it sound as if my ‘purity’ will be assassinated,” Celestia smirked. “I gathered that they would, but thank you for your warning. I would have thought you’d be in on any such plan. Such a dichotomy gives me an awful lot of teasing fodder for you.”

“I am not currently ‘in on’ any such plan, though I confess that I would encourage such a thing,” Luna blushed. “As you are aware of their intent, however, is it necessary to wait until your season? I am comfortable with you naming me the ‘instigator’, if that assists in your decision.”

“If I am your prey, dear sister, you will have to hunt,” Celestia chuckled, but then added seriously. “And do not speak as if I will surely oblige. Even if I hate technical celibacy as much as you, you remember why we took this vow, yes?”

“To save ourselves the pain of seeing our lovers and children die,” Luna sighed, “But we cause ourselves more pain in what we deny ourselves. And if your dreams are anything to go by, you wish to break the vow perhaps more than I did. If you do not wish to be attached, you can always maintain a casually erotic relationship instead of a romantic one.”

“We’ve tried that before, dear sister,” said Celestia, “I don't think I can avoid not becoming attached to somepony if I play around .And if you marry into their union, you will certainly be attached. Not only that, but Shining will feel like a spare when he ages and both his wives don’t.”

“I have wondered if that is her true intent,” sighed Luna. “Perhaps she wishes to lure us into a situation where we agree to bestow immortality upon the one she loves most, regardless of his suitability for the process.”

“I do not think she would,” Celestia observed. “She knows that the process is fatal if a mortal is not prepared. She wouldn’t allow us to risk his life on a hope, nor would we do so.”

“Perhaps she believes that she can push Shining to the level required before his departure, “Luna said. “Being the husband of several princesses would scarcely hurt his chances.” She sighed. “Regardless of that, I do not believe our former lovers would wish us to stagnate alone. What is the use of our agelessness if we do not truly live?”

“Not even Starswirl managed to reach that level, and we still don’t know for certain that Twilight will... even if I have faith,” said Celestia. She then returned to her somewhat-trollish smirk, pushing the conversation back away from seriousness. “Back on topic, are there not laws against sibling marriage?”

“We are breaking a similar law as we speak,” Luna pointed out, gyrating her hips more firmly against Celestia to illustrate. The sound of their sopping wet bodies was loud in the quiet room. “Even then, there is the exception listed, ‘except by royal order’. We have included such a clause within most of our laws.”

“Naughty,” Celestia grinned, “After I'm done with you, maybe I’ll go jaywalk by royal order.”

“I am appalled at your tyranny,” Luna said in mock-surprise.

Another knock on the door interrupted them, “Princess Luna? Princess Celestia? I was told I can find you here?”

“Enter,” called out Luna.

Not only did the sisters continue their crime-in-progress, but both folded their wings so that their actions were more visible. When the guard entered, he stood slack-jawed for several long moments. He stared as the two most powerful beings in Equestria scissored and kissed.

“Is there a problem?” Celestia asked between kisses. This was a new guard, likely not aware of their special sisterly bonding. So they made sure to work it hard.

“You will forget having seen us in this position,” said Luna after the next kiss. ”Now speak.”

“Um yes, your Highnesses,” the guard finally regained use of his brain after the shock. He closed the door behind him. “I was told to inform you both, that Queen Chrysalis has responded favorably to Princess Cadance’s offer for negotiation with her.”

“She what,” Celestia dead-panned.

The princesses both ceased their movements; it was their turn to look slack-jawed.