After Queen Rarity once more rejects the advances of one of the many noble ponies who seek her affection, Princess Sweetie Belle finds out that her sister is secretly in-love with somepony else, thus her heart-breaking streak. Alone in the throne room with her sister and the royal body guard, Twilight Sparkle, the young princess decides that she's going to find out the identity of Rarity's secret crush, no matter what.

Part of the Bodyguard!AU Series, based on Earthsong9405's AU where Twilight is the bodyguard to a "Princess/Queen Rarity". Prior knowledge of the AU is not necessary to read the story.