Princess Luna, otherwise known as Princess of the Night, realizes, on one starry night, of her pitiful life. With no friends to turn to, she thinks only of the one pony who ever showed her the tiniest bit of friendship. Not those who feared her, or those who pampered her just because she was a princess. But a true friend, by the name of Twilight Sparkle.

Also, someone actually did a dramatic reading of this fiction. Here it is.
http://www.youtube.com/watch?v=dFBrkDCDWX4