Answer:
A young man referred to as The Fair Youth
Step-by-step explanation:
Sonnet 18 was specially dedicated to the Fair Youth and he began the poem by being showing his love for his young lover: "Shall I compare thee to a summer's day?", going forward, he talks about the beauty of the youth as being "more lovely and more temperate" than even summer and his love and beauty become more radiant on summer's day. He ends the line by saying that his love for him is eternal and also that his youthfulness "shall never fade"
Sonnet 18 contains 14 lines, 3 quatrians and 1 couplet. It was written in iambic pentameter.