Act IV, Scene iii of Love’s Labour’s Lost opens with Berowne entering alone, lamenting that he has fallen in love with Rosaline and cursing himself for breaking his oath of study. He hides when the King enters, also lovesick and reading aloud a poem he has written to the Princess of France. The King in turn hides when Longaville enters, reading his own sonnet written to Maria. When Dumaine then enters to read his poem to Katherine, Longaville steps out to rebuke him — only to be rebuked in turn by the King, who scolds both of them for breaking their vows. Berowne then emerges to rebuke all three, positioning himself as the only faithful one — until Jaquenetta and Costard arrive and deliver a letter that exposes Berowne as equally guilty, having accidentally sent his love poem to Rosaline via Costard instead of his intended messenger.

With all four men exposed as oath-breakers and lovers, Berowne leads them in a spirited group defense of their situation. He delivers a lengthy argument that loving women is not a distraction from learning but is itself the highest form of learning, as the beauty of women teaches men to perceive and understand the world more fully. The four men celebrate their shared condition, agreeing to abandon their pretense of scholarly devotion and pursue the ladies openly. They begin to plot how they will woo the Princess and her ladies-in-waiting, planning to court them with revels, gifts, and entertainments. The scene ends with the four lords departing together, united in their new purpose.

“Love’s Labour’s Lost” opens with Ferdinand, the King of Navarre, and his three courtiers—Berowne, Longaville, and Dumain—taking a solemn oath to dedicate three years to scholarly pursuits while forswearing the company of women, fasting, and sleeping only three hours per night. Their noble intentions are immediately complicated by the arrival of the Princess of France and her three attending ladies—Rosaline, Maria, and Katharine—who come on a diplomatic mission regarding Aquitaine. Despite their vows, all four men quickly fall in love with the visiting ladies, though they initially attempt to hide their feelings from one another.

The romantic complications intensify when each man tries to secretly woo his chosen lady while believing himself to be the only oath-breaker. Comic relief is provided by a cast of eccentric characters including Don Armado, a bombastic Spanish knight who loves the country wench Jaquenetta; Costard, a simple clown; and the pedantic schoolmaster Holofernes. The ladies, aware of the men’s affections, decide to test their suitors’ sincerity by disguising themselves at a masque, leading to a delightful scene of mistaken identities where each man woos the wrong woman.

The play builds toward what seems like a conventional comic resolution with multiple betrothals, but Shakespeare subverts expectations in the final act. News arrives that the Princess’s father, the King of France, has died, casting a somber shadow over the festivities. The ladies impose a year-long trial on their suitors—the men must prove their love’s constancy through a period of good works and patient waiting. The play concludes unusually for a Shakespearean comedy, with promises of future union rather than immediate marriages, ending with the famous songs of Spring and Winter that celebrate the eternal cycle of seasons and human nature.