Fluttershy looked at Rainbow Dash with a look of deep affection and trust. She smiled at her beloved blue Pegasus.
"Dashie, I can't wait for the day we can have our own family," she said, her face practically shining with happiness.
Dash looked away, her ears lowered, she sometimes forget that Fluttershy had left Cloudsdale when they we too young for them to learn about their people and who they really are.
"Flutters," she cleared her throat. "There is something I have to tell you that you need to know."
The yellow ponies smile slowly faded at Rainbow Dash's tone and her expression.
"What is it Dashie?" she asked in a hesitant manner.
The blue pony sighed as tears welled up in her Ruby colored eyes.
"We can't have children, and it's not because we are both mares. We're not really, completely ponies," she paused and and her lip quivered at the yellow pony's confused expression, "We are automatons. We are robots."
Fluttershy gasped and ran off at full speed, sobbing profusely, leaving Rainbow Dash sitting on the ground crying softly. In all the years she was with the blue eyed pony she had never done anything that would have hurt her as much as telling her the truth about what they are. She hated every second of it.