The Genius Magician's Warning: Regret, More Often Than Not, Comes Too Late

The Second Prince, sensing that his beloved baroness fiancée was being harassed by her betrothed, commissioned a renowned magical genius to create an [ear cuff that allows one to hear true intentions when imbued with magical power]. Receiving the cuff along with a warning-like admonition: "Don't say I didn't warn you?" the prince uses it to uncover his fiancé's true feelings and attempt to expose the harassment, but... This is a ultra-short story of exactly 1,000 characters submitted to the Naro Radio Grand Prize 4. It's over in a flash, so I'd be grateful if you'd read it as a brief way to pass the time.