Forbidden

Luna rolled out of bed randomly. She checked the time. It was already nighttime, the time where she didn't sleep. She untangled the sheets from around her and teleported herself to the castle. Sombra was there staring at the stars and became startled from Luna's arrival.

"I was just looking at this star arrangement you made." Luna blushed and dug into the ground with her foot. She sat down on the grass. It was a beautiful night, and Sombra was happier than ever for some reason. He dug something out of his pocket and opened it. "Luna...will...will you marry me?" he asked awkwardly. Luna gasped and her horn flickered.  "Yes...yes...but we cannot tell my sister of this." Sombra nodded.

"I promise. I promise, Luna." And Luna leaned forward and kissed him. And from out of the shadows Celestia jumped out and tackled Luna to the ground, not letting her up. "Luna!" cried Sombra and pried a fuming Celestia off of Luna.  "Now, you two. Stop."  Celestia flew off, leaving two shocked ponies who shortly got back to what they were doing previously.

Celestia heaved herself onto her bed, thinking about what she had done to her sister's privacy. Of course, she WAS breaking Celestia's rule, and WAS being stubborn and foolish, but still. She slowly brushed her mane until the sparkles shimmered. Then, using her alicorn magic, set the brush on her nightstand and went to sleep.

Luna returned home at exactly 5:51 in the morning, a time which Celestia would never approve of. But Luna went to bed, and I guess it ended OK. Except that Celestia still didn't accept Luna and Sombra's friendship, and how it was way more than a friendship.