The story about Echo. Echo was a Greek nymph living in the mountains. She helped Zeus to be unfaithful with other nymphs. When Zeus's wife Hera found out, she punished Echo by making her unable to speak with her own words. She could thenceforth only repeat what others were saying.
Echo fell in love with the handsome young Narcissos, but he rejected her. She then faded away until only her voice - the echo - remained.
For the Romans Zeus was Jupiter, Hera was Juno and Narcissos was Narcissus.