Rainbow Dash is a creature of speed; a being of superb athleticism and ability.

And one of obliviousness. When a particular sun-kissed Princess begins to spend more time than usual in the company of a certain apple farmer, the dots don't connect- at least, not until the wedding is announced.

Most people would see an engagement and a wedding as a defeat. But Rainbow Dash is not 'most people' and she will win the heart of Applejack before it's too late. It's really quite simple:

No Princess Celestia, no problem.

Warning: Contains lesbians, rocket launchers, and maybe goats.