A few minutes ago...
Shining Armor just walked in the Crystal Palace, bringing Flurry some new toys, and a guard approached him. "Excuse me, your majesty."
"Yes?", Shining Armor responded.
"Princess Cadence wishes to see you in your bedroom immediately.", the guard told him.
"Okay, I'm going to head there now." Shining Armor said as he's heading towards his room. And as soon as he opens the door, a letter is shown in his face.
"What is the meaning of this?!" Cadence roared using the Royal Canterlot Voice.
"I-I-I can explain this." Shining Armor stammered.
"Then you can explain why you have sent two of our guards to spy on Twilight and Flash on their dates?", Cadence demanded.
"Um..." he paused.
"I would understand you doing this to Flurry when she becomes a teenager, but you doing this to your sister?", she roared.
"Cadence, please understand.", Shining Armor tried to reason with his wide. "I had a good reason to do so."
"Really?" Cadence said raising a brow. "And what reason would that be?"
"I was worried.", Shining Armor told her. "I just didn't think that Flash Sentry would be good enough for Twilight, but from the reports I got from Arrow Hoof and Iron Head, things were going swell. I didn't tell you about it because I knew that you would get upset with me, but I had some second thoughts about it."
"And the thought of 'My little sister's happiness being the most important in Equestria for me' didn't go off?!", Cadence asked.
"You're taking this way out proportion.", he told her.
"And I have every reason to do so, because we had dinner at your parents house and we met his parents. Flash came from a family of good ponies, and they love her. And your parents love Flash!", Cadence told him. "Everypony is happy for the two of them; even Flurry who approves of Flash greatly, but the only one who isn't happy for them is you!"
"Cadence, sweetheart, I...", Shining Armor tried to explain more.
"I don't want to hear it.", Cadence said to him. Using her magic, she tossed her husband out along with a pillow and a blanket. Then she locked the door.
Shining Armor knew that he screwed up big time. It was bad enough that he outed his sister at the wedding rehearsal when Chrysalis impersonated her and fed on his love for Cadence, but he knew that this was even worse. With nowhere else to sleep, he decided to sleep in Flurry's bedroom for the night. Shining Armor just couldn't sleep, because of the earful Cadence gave him, but he couldn't blame her. That night gave him the time to think about what he did. The next morning Shining Armor made his way to the breakfast table and placed Flurry in her highchair. He slowly approached Cadence as she began giving him the silent treatment.
"Cadence, I know that you're not talking to me right now.", Shining Armor said to her. "You were right about Twilight and Flash. I was only looking out for her and I feel so awful about what I did. The least you can do is let me know that you were listening."
"I was listening.", Cadence said to Shining Armor. "It's just I was just upset with you. I know that you were just doing this because you were worried, but that was no excuse."
"I know.", Shining Armor agreed. "I plan on making it right for the two of them."
Shining knew that he had to apologize to both hhis sister and her coltfriend, so he had to start with Flash. As he's looking for him, he noticed Arrow Hoof and Iron Head moping the floor. The two guards took notice of him.
"We screwed up, sir.", Iron Head said.
"Sorry that we did.", Arrow Hoof added.
"You two have nothing to apologize for.", he said to them. "It's my fault that the both of you got in trouble."
As it turns out, they got to do cleaning duty for a week. Arrow Hoof and Iron Head were only following orders, but at the same time they've felt guilty.
Shining Armor eventually found Flash who is patrolling the halls when the two stallions bumped into each other. Upon seeing Shining Armor, Flash has a scowl on his face, it was obvious that he was angry at him.
"Hello, Flash.", Shining Armor greeted him. "How are things with my sister?"
"Like you bothered to find out.", Flash snapped at him.
"Flash listen", he tried to reason "I can tell that you're crossed with me, and you have every right to be. And I get that Twilight is too. But I just wanted to say that I'm sorry."
Flash looked at him his expression never changing. "You're telling me this why?"
"It's just that I never thought that the two of you wouldn't be good for each other, and I had to take matters into my own hooves, but I ended up taking it too far. I told them to follow you and report their findings to me, but I never thought that you would end up being their commanding officer.", Shining Armor said. "After being kicked out of my bedroom last night, I can now see that what I did was wrong."
"You're right about that, sir.", Flash agreed. "But I'm not the one you should apologize to."
"I know.," the unicorn agreed. "I'm heading down to Ponyville to make peace with my sister."
Shining Armor departed towards the train to Ponyville. As he boarded, he thought of different ways that he could make it up to her. He figured that Twilight would end up giving her brother the cold shoulder, but he knew that she had every right to. Shining Armor departed the train and made his way to the castle. As he reached his destination, he knocked on the door, only to be answered by Spike, and he was not happy to see him.
"Oh, it's you.", Spike coldly said.
"Hey Spike.", he said. "Is Twili here?"
"She is.", Spike answered. "But I don't think she wants to see you right now. After what you did."
"Please Spike, I got enough of that at home, don't give me that here.", Shining Armor said.
Spike just stared at him for a moment, but he had to let him see Twilight because she couldn't stay mad at him forever. "Okay, but don't expect her any warm fuzzies from her."
Spike opened the door as Shining Armor entered and looked for his sister.
Twilight is currently reshelving her bookcases placing them in a precise order, but then Shining Armor entered the room.
"Hi Twili.", Shining Armor greeted.
Hearing his voice, Twilight did not look at him. He can tell that she is upset at him.
"Forgot that it was reshelving day.", Shining Armor joked. His efforts was not going well. "I want to talk about you and Flash." Twilight still was busy reshelving books. "I now know what I did was wrong. Cadence gave me an earful, and I spent the night in Flurry's bedroom, and all of last night gave me the time I needed to think about my actions. And yes I know that actions had consequences, but I apologized to Flash before I got here. And I thought that I should apologize to you as well. I ended up hurting my own sister. I didn't expect you to accept my apology, but I was just afraid of losing my precious little sister."
Twilight stopped what she was doing and turned to him with a bewildered look on her face. "Is that what you were afraid of?" Shining Armor nodded. "You're not going to lose me, you big goof. I'll always be your little sister. And you'll always be my Big Brother Best Friend Forever."
The Sparkle siblings gave each other a heartful hug making up for Shining Armor's mistake.
"I'm glad that you forgive me, sis.", Shining Armor smiled.
"Just don't ever do that again.", the alicorn said sternly.
"I promise.", Shining Armor responded nervously. "Just don't tell mom and dad about this. Mom especially wasn't happy about, well you know."
"I understand.", Twilight said as she cringed at the memory.
Afterwards, Twilight along with Spike and Starlight called up Applejack, Fluttershy, Rainbow Dash, Rarity, Pinkie Pie, Big Mac, Apple Bloom, Scootaloo, Sweetie Belle, Filthy and Spoiled Rich, Diamond Tiara, Silver Spoon, Zephyr Breeze, and Ajax over so to the castle, and he apologized to everypony involved in yesterday's misunderstanding. He admitted that he did send Arrow Hoof and Iron Head to spy on Twilight and Flash and also told them that the ordered the two guards not to wear their armor, because it would draw attention. Everypony understood the confusion and forgave him for it.
Shining Armor returned to the Crystal Palace only to find his wife and daughter waiting for him to get home. "Welcome home, Shining Armor.", Cadence said kissing on the lips. Shining Armor kissed Flurry on the cheek.
That night, Shining Armor and Cadence are in the same bed together again. "I gotta admit, even though that it was just one night, and I was in Flurry's room, it was lonely without you.", Shining Armor said.
"I've felt the same way.", Cadence said. "Last night just wasn't the same without you. Did Flurry give you any trouble?"
"No, Flurry was as good as ever, but there were times that she woke up from bad dreams, but I just did what my mom used to do when I was Flurry's age."
"Well, at least she was in good hooves.", Cadence said with content.
"I love you, Cadence.", Shining Armor said.
I love you too, Shining Armor.", Cadence said before she and her husband kiss each other good night. They both fell to sleep, allowing them to dream happily. Flurry's cries can be heard in the castle, Cadence decided to tend to her. "I've got it."
Well, Shining Armor apologized to his sister and her coltfriend. All I can say is it only made their love grow stronger because of that experience. But how far will their love go? You can find out by waiting for the next chapter.