Applejack is afraid to love. After what she went through when she lost her parents, she had decided not to get in a situation that would set her up for that pain again.
Rainbow Dash has always tried to be cool about her feelings. But she finds out that the old saying: Those who hesitate are lost is painfully true. Plus she will have to live with the ultimate shame; That of Rarity telling her "I told you so" for the rest of her life.
This is like the first story of my series Bookends in that it is a short (yes and rushed) story to see how it is received. That way I know if any sequels are to be attempted.