This was the day.
The day they finally had a date. They would fly together, lay on a cloud in the night sky and finally
they would kiss.
The perfect plan.
Or so Rainbow thought.
The Pegasus flew to the friendship-castle, only to be met by a glowing horn.

"YES!!! The spell works!!!"

"Twilight, what the heck?"

"Oh, right. Hey Rainbow!"

"Yeah.. Hey. What's.. going on?"

"I found a new spell. I can make magic visible!"

Dash froze and backed away.
"Y-you can.."

"Um..yeah...is something wrong?"

Dash snapped out of her trance.
"Oh, no. Nope. Everything's alright."

"Oh, okey-"

"As long as you don't use that spell anywhere near me."
Now Twilight was taken aback. But she stopped the spell.
Rainbow landed next to her.

"So..uh...wanna fly?"

"Oh, right. Of course."
And the two flew into the sky. Rainbow was performing some tricks to impress Twilight while they were flying through the sky. Twilight wasn't paying any attention to it. She was trying to figure out why Dash reacted that way to her spell. She expected the Pegasus to be eager to find out how strong her Pegasi Magic is. Or to maybe find out if Scootaloo had enough to fly.
Anything but...That.

"Twilight? Hello? Equestria to Twilight! Anypony home?"
Twilight almost fell out of the sky, her wings froze from the shock. She was about to scream when she found herself carried in Dash's very hooves. She gave a sigh of relief and started flying on her own again.

"What was That all about?"

"I'm sorry...I was thinking..-"

"Thinking that you could top Me? Hah! Dream on."

"No, I meant-"

"Come on, let's have some fun without you going all into egghead-mode, alright?"

"Yeah..alright."
The alicorn sighed, but couldn't help but smile. Seeing Rainbow soaring through the sky got her thoughts away. Dash was in her element. The sky. If Pegasi could sleep while they fly, she bet that Rainbow would probably never land ever again.
The sun was setting and the two winged ponys were laying on a cloud side by side. Everything was according to the plan. Everything was just perfect. As it got darker, the air got colder. Once Rainbow felt Twilight shiver, she laid her wing around the alicorn. Twilight immediately turned her head to the Pegasus. They smiled at each other. Just perfect. And now the last part. The ki-

*twitch*

'Oh no! Not now! Not now in all moments!!!'

"Rainbow? Are you okey?"

Then her horn was glowing in the brightest shimmer. To her surprise in every color of the rainbow.

'Oh, perfect.'

The Pegasus got up and jumped off the cloud, flying straight to the ground. Twilight watched it with a blank face. What the heck was going on!?
She followed Dash to the ground, but couldn't find the Pegasus anywhere anymore. She looked around, her horn giving out. Dash wasn't here anymore. Still, she had to find out what in the name of Celestia just happened.
She searched for hours with no avail. Dash wasn't at home, not in the sky, not on the ground, just nowhere. Finally giving in, the alicorn went back home. This was not how she thought this day would went...
Her horn was glowing when Dash was twitching. Without using any Pegasi Magic except for the staying on clouds. Her spell is only detecting magic that she isn't using at the moment. And this was the most powerful magic she felt so far.
And the colors!
Something was off about Rainbow, and Twilight was eager to find out what.
As the days went on, with Rainbow still nowhere to be seen, Twilight got anxious. What was it with Rainbow? Was it her fault? What was going on!
No answers, no help, no cyan pegasus in the sky. Twilight was lost. She got over to her desk, grabbed a quill with her magic and began writing on a scroll.

"Dear Princess Celestia,

after I found a spell that makes magic visible, something happened and now Rainbow Dash is nowhere to be found. I'm afraid it's my fault...I don't know what exactly happened. All I know is that she was twitching and my spell activated itself by the amount of magic. Then Rainbow left and I don't know where she could be.

Yours sincerely,
Twilight Sparkle"

"SPIKE!!!!"

---Canterlot Castle---

"So, she has a spell and found out about your magic?" Celestia asked the cyan Pegasus that was sitting next to her in the throne room in the castle.

"Not exactly...she only knows that I have magic, but she doesn't know what it is."

"It's not safe for you anymore. You need to stay at the castle. Guards, bring her to her room, lock every door. We can't take a risk."

Dash gulped and got carried on her arms by two guards.
A scroll appeared in front of Celestia. She grabbed it with her magic and read it.

"Guards. Get a carriage. We have to get my student Twilight Sparkle in here before she tells somepony about Auroras magic."

The guards nodded and took off.

Author's Note

I wrote this a reeeeaaally long time ago. My dear iPad deleted most of it for whatever reason so I stopped writing. Now I found out how to find messages on Facebook, since I always sent it to my friend, and here we are.