The widow, Hanna Glawari, arrives, amidst a stir from the hopeful young bachelors. Baron Zeta introduces Hanna to Danilo, not knowing that Hanna and Danilo had previously been romantically involved with each other. Both Hanna and Danilo are stunned to see each other. Danilo is thrilled, and tells Hanna that he loves her, but Hanna accuses him of only wanting her for her money. Upset about this, Danilo mops the sweat from his forehead with a kerchief, which Hanna instantly recognises as a keepsake she had given to Danilo the last time they had seen each other (when Danilo's aristocratic uncle had forbidden their romance and had forbidden Danilo to marry Hanna, because Hanna was a poor peasant girl). Hanna takes back the kerchief from Danilo and then leaves the room. Danilo remembers Hanna the way she used to be — as a young peasant girl — and he remembers, with fondness, the way she had given him the kerchief - these memories are danced as a "pas de deux".