The Question and Answer section for Christopher Marlowe’s Poems is a great resource to ask questions, find answers, and discuss the novel.
He pledges his love by offering a future of eternal happiness in a Spring-like paradise. The Nymph is skeptical that the shepherd can deliver even half of his promise.
While the first stanza in the Passionate Shepherd is filled with the promise of joy and eternal beauty, the nymph's reply (first stanza) is guarded and even skeptical.
In the end, the nymph states that she would accept the shepherd’s offer if “could youth last” and “had joys no date.”