Which mythical youth fell in love with his own reflection?

The mythical youth who fell in love with his own reflection is Narcissus. In Greek mythology, he was known for his extraordinary beauty and became infatuated with his own image in a pool of water, ultimately leading to his demise. This story serves as a cautionary tale about the dangers of excessive self-love and vanity. Narcissus's tale is the origin of the term "Narcissism."