What happens
Rosalind, disguised as Ganymede, encounters Jaques and mocks his melancholy philosophy. When Orlando arrives late, she scolds him for breaking his promise, then shifts into her cure: she offers to play Rosalind in a mock courtship, allowing him to rehearse wooing her. Orlando accepts eagerly, and they perform a playful marriage ceremony with Celia as priest, testing whether his love can survive reality rather than fantasy.
Why it matters
This scene crystallizes the play's central mechanism: education through performance. Rosalind has moved from passive victim of her uncle's banishment to active architect of love's instruction. Her mock marriage to Orlando is not a game—it's a rehearsal for the real thing. By asking him to woo her as if she were Rosalind, she forces him to speak directly, to risk rejection, to move from the safe silence of admiration into the vulnerability of actual courtship. When he says 'I can live no longer by thinking,' he admits that fantasy has exhausted him. Rosalind's cure works precisely because it acknowledges that love requires both imagination and action, both the dream and the waking world.
The scene also reveals Rosalind's psychological sophistication about desire and deception. She warns Orlando that she will be jealous, unfaithful, moody, and changeable—she will, in short, be human rather than the idealized 'Rosalind' of his poems. This is her greatest gift: she teaches him that real love is not the conquest of an impossible ideal but the acceptance of an actual, flawed person. Her threat to leave him if he breaks his two-o'clock promise establishes real stakes. The mock marriage has weight because it carries consequences. By the scene's end, Orlando has learned not just to love Rosalind, but to want her—the real her—enough to show up on time.