The Song of Achilles by Madeline Miller

Achilles, “the best of all the Greeks,” son of the cruel sea goddess Thetis and the legendary king Peleus, is strong, swift, and beautiful, irresistible to all who meet him. Patroclus is an awkward young prince, exiled from his homeland after an act of shocking violence. Brought together by chance, they forge an inseparable bond, despite risking the gods’ wrath.