How did the princess and stable boy fall in love Princess Bride?

The Princess Bride does not feature a princess and stable boy falling in love. The central romance in the story is between Princess Buttercup and Westley, a farmhand (not a stable boy) who was presumed dead but returns as the mysterious Dread Pirate Roberts.

Here's a breakdown of their romance:

* Initial Love: Buttercup and Westley are deeply in love but their social standing makes their relationship seem impossible. Westley leaves to seek his fortune and promises to return for Buttercup.

* Westley's Presumed Death: Westley is believed to have been killed by the pirate Roberts.

* Forced Marriage: Buttercup is forced to marry Prince Humperdinck, a cruel and power-hungry man.

* Westley's Return: Westley returns, disguised as the Dread Pirate Roberts. He saves Buttercup and reveals his true identity.

* Reconciliation: Buttercup and Westley reunite and their love is rekindled, overcoming all obstacles.

While the story does include a secondary romance between the farmhand Miracle Max and the pirate Inigo Montoya's mother, it is not the primary love story.