About Buttercup and Westley
Buttercup and Westley are two of the characters of the movie The Princess Bride, and it is their love - and their struggles to be together - that makes up the bulk of the movie.
Wikipedia's plot synopsis for the movie gives the following:
A beautiful young woman named Buttercup lives on a farm in the fictional country of Florin. She delights in ordering the farm hand Westley to perform chores for her. Westley's only answer is "As you wish". Eventually Buttercup realizes his true affection for her and returns his love. Westley soon leaves to seek his fortune so that they can marry; but Buttercup later receives word that his ship was attacked by the Dread Pirate Roberts, who is notorious for leaving no victim alive. Five years later, believing Westley to be dead, Buttercup is reluctantly engaged to Prince Humperdinck, heir to the throne of Florin.
The name of this fanlisting, True Love stems from the frequent comments about how Buttercup and Westley have true love, and how true love is one of the most amazing things in the world.