What happens at Violetta’s party in Act I of La traviata?

In Act I of La traviata, the Parisian courtesan Violetta hosts a party at her salon. During the event, her friend Viscount Gastone introduces her to Alfredo Germont, a young man who had been inquiring after her health daily during her recent illness. Although Violetta initially teases him, she eventually encourages him to lead the guests in a drinking song, the "Libiamo," during which their mutual attraction becomes evident.1

Later, while the guests are dancing, Violetta suffers a bout of dizziness. When Alfredo finds her alone, he expresses his deep love for her, claiming that no one else truly cares for her. Violetta initially laughs off his advances and insists on maintaining her freedom, but she is eventually moved by his sincerity. Before the guests depart, she gives him a camellia, instructing him to return it once it has faded. Left alone, Violetta contemplates the possibility of true love but ultimately concludes that she must remain "Sempre libera" (always free) and continue living for pleasure, despite being haunted by Alfredo’s declaration.1