--SHA Vita Hadriani XIV.5-7
While traveling down the Nile, [The Emperor Hadrian] lost his lover Antinous and mourned him excessively. There are several rumors about how it happened. Some say that Antinous was ritually sacrificed to preserve the Emperor’s life, while others consider the youth’s beauty and the Emperor’s passion for him and think it was the result of a lover’s quarrel. The Greeks even deified the youth at the Emperor’s behest, and claim that his spirit gave oracles, but many dismiss these as being written not by Antinous but the Emperor himself.