He had gained many female admirers, entranced by his beauty, but he rejected them all. One of them, Echo, was so upset by his rejection that she withdrew from the world to waste away. All that was left of her was a whisper. It was heard by the goddess Nemesis, who, in response, made Narcissus fall in love with his own reflection, at which he stared until he died. A narcissus flowered in his absence.

https://www.historytoday.com/archive/foundations/myth-narcissus