Donizetti's L'elisir d'amore
Nemorino is madly in love with Adina, who either ignores him or taunts him. In desperation he purchases a love potion from wheeler-dealer Dulcamara, who assures him of its immediate effect. Sure enough, the 'potion' (a potent alcoholic brew) gives Nemorino a boost of confidence. The gossip that Nemorino has suddenly come into money reaches the ears of the ladies, who begin to take great interest in him. Nemorino, convinced this is the effect of the potion, rejoices that Adina will soon be his. Meanwhile, his love rival Belcore pushes Adina to agree to marry him. Nemorino, frantic that he will not win Adina in time, goes to buy more of the elxir, but realises he can't afford it. In desperation he signs up to work with Belcore. Adina, seeing girls falling at Nemorino's feet realises that she is jealous and that she is really in love with Nemorino, but is it too late?