Blue. That was the nickname she gave you.

You didn’t quite understand why, but it was cute nonetheless.

“Why do you call me Blue, Piper?”

“Well, it’s the color of your vault suit, duh, but also because you remind me..of the sky. It’s dumb, I know. You just remind me of the good that’s ahead I guess. Is that weird? Creepy?” She chuckled nervously.

Piper? Nervous? Never, but this time she looked at you with an unsure expression.