Cavern Days

"So, Twilight," Cadance rolled over to face the unicorn, speaking in a playful tone wearing a half-lidded expression, "got your eyes on anypony?"

Twilight sat up, flush-faced.  "w-what?"

"Got your eyes on any cute colts?" Cadance laughed a little at the purple mare's sputtering.

"No!"

Her quick and embarrassed reaction was adorably hilarious.  Adoralarious.  "So it's a filly then? I guess I could see a cute little bookworm like you swinging that way-"

"N-NO! What does that eve-"

"Oh MY, Twilight! Not a colt and not a filly?" She circled the smaller pony like a shark around prey. "I NEVER thought that YOU of all ponies would be into..."  Cadance was doing all she could not to burst out laughing as she moved in close to Twilight's face, which by now was radiating heat from the blood rushing into her cheeks, and whispered:

"...interspecies."

Twilight gave a flustered half-scream, half-yell and shoved Cadance away from her.  "You're awful, Cadance!"

Cadance bounced around Twilight, chanting "Didn't deny it! Didn't deny it!"

As she came back around the front of the younger mare, she noticed Twilight wasn't laughing.  In fact, she looked on the verge of tears.  Cadance gasped and immediately wrapped her up in a hug.  "Twilight I'm sorry! I didn't mean to hurt your feelings! I was just teasing..."

"...it's okay. That's not it, Cadance."

The alicorn of love drew back and looked Twilight in the eyes with a sympathetic look.  "Then what's wrong, Twilight?"

"The teasing and bouncing reminded me of one of my friends...I want to go back to the surface, Cadance."

They re-embraced. "Me too, Twilight. This hole sucks."