Left only with a promise to keep in touch, Rainbow Dash struggles to convey her feelings, and to figure out what the words were that she couldn't say on that one last misty night at the train station before Twilight left.
On Hearth's Warming Eve, Rainbow Dash is determined to tell Applejack that she has a crush on her. Things would go a lot more smoothly if the farmpony wasn't so utterly clueless...