Misplaced Hearts

When Rarity realizes that Pinkie Pie was alone on Hearts and Hooves Day, she gave the chocolates she was saving for her special somepony to her. A horrible mistake.

In which her best virtue transforms into her worst flaw. Rarity, by the good nature of her heart, offered a lonely friend some chocolates on Hearts and Hooves Day. It's been a year now.

A long, long, long year. Pinkie Pie still won't leave her alone.