Rosalind's first meeting with Orlando: she is totally smitten. Her friend Celia wants to know the why's and wherefore's of this new experience, and questions her accordingly. The verse is intended to be rather 'breathless' - free and colla voce, as Rosalind's descriptions of her feelings tumble out; the chorus, addressing the question posed in the title, is more legato - thoughtful and reflective. Postscript: The bell-note has been changed to a more manageable pitch (thanks to Eric James for prompting this) change).