Once Upon a Broken Heart

Why these tropes fit

A heartbroken believer in true love strikes a dangerous bargain with the wicked, morally-gray Prince of Hearts, trading three kisses to stop her true love's impending wedding. The deal spirals into dark-romance territory as the immortal's true plans emerge, pitting the heroine between the love she lost and the enigmatic prince, with the threat of either a fairy-tale ending or exquisite tragedy and high emotional angst threading throughout.

Evidence from the source

• Morally Gray: “the charismatic but wicked Prince of Hearts” source
• Strong Heroine: “Desperate to stop the wedding and to heal her wounded heart, Evangeline strikes a deal with the charismatic but wicked Prince of Hearts.” source
• Tragic Romance: “the most exquisite tragedy” source
• Angst: “to heal her wounded heart” source
• Dark Romance: “bargaining with an immortal is a dangerous game” source

Metadata source: Open Library. Quotes are used only to verify the tags.