Daphnis and Chloe.

Daphnis and Chloe is the story of a boy and a girl, each of whom is exposed at birth along with some identifying tokens. A goatherd named Lamon discovers Daphnis, and a shepherd called Dryas finds Chloe. Each decides to raise the child he finds as his own. Daphnis and Chloe grow up together, herding the flocks for their foster parents. They fall in love but, being naive, do not understand what is happening to them.