L'ELISIR D'AMORE (The Elixir of Love)
Adina comes upon the scene and is at first alarmed that Nemorino can be so cavalier in his apparent last hour (before the marriage of his expressed heart's desire). The Doctor brags that it is a demonstration of the power of his love potion and reveals to Adina that the love-sick Nemorino was willing to consign himself just to win her heart.
Nemorino sings the famous aria, "Una furtiva lagrima", which expresses his unchanging love for Adina. She is completely won over by these revelations and agrees to love only our hero. Dulcamara rides out of town with face saved and still extolling the treasures of his wares.