You banished Luna?" Shadow asked as his voice wavered in disbelief, "One - thousand - years..."
"I had no choice," Celestia replied.
"No choice? No choice!" Shadow's voice growing to a thunderous to shout, "You could have helped her! Why didn't you call me back from my scouting mission?"
"There was no time... it's the only way... the prophecy," Celestia stumbled over words as she tried to convince Shadow of things she herself was unsure of, "Please, Shadow," she said as she stepped towards him, "please forgive me."
"Forgive you?" a sneer spread across his face, "Never. I will never forgive you."
"Shadow please," Celestia backed away.
"We were to be married!" he shouted, "This Hearth Warming Eve, we were to marry! You have banished my heart with her - I will never see her again! Do you understand? You can live forever! You'll see her! I will have passed away long before she ever touches Equestria again!" the dark furred earth pony was slowly walking towards Celestia as his voice grew.
A few guards entered the room and began to approach Shadow and Celestia, but she motioned them away, "I understand, but she wasn't Luna anymore... something... something else had her... and I had to do it... the prophecy says she'd be whole again... if... If I sent her away..."
The rage in Shadow's face eased a bit and was replaced with desperation, "Then send me there too. Send me to Luna."
"I - I can't," Celestia Stuttered, "The spell only works once."
Shadow collapsed under the weight of his sorrow and wept, and let out great screams, as if he would die from the loss of his love. Celestia layed next to him and nuzzled close, her own tears mingling with his on the cold stone floor of the palace.
When his tears had run dry and his voice had grown thin, Shadow slowly rose and said with a rasping voice, "I will find a way to reach her. If I have travel the distance between here and the moon or find a spell ... maybe Starswirl. . "
"Do what you have to," Celestia said kindly.
"I will," he said as he turned to leave, "and when I have reunited with my love, I will then deal with your betrayal," he said coldly as he walked out into the night air.
"Princess," one of the guards spoke up, "Should - should we arrest Lord Shadow? That - That was treason."
"No," Celestia siaghed as she stood, "that was not treason - that was heartbreak. Let him look for his answers. Give him the space he needs to heal."
"Yes, Majesty," the guard said, "As you command."