Heh, I am also familiar with Antinous's story via Thomas Hampson (did I recc this to you, cahn?), and I'm here with this review of Rufus Wainwright's Hadrian! More a review of the music than the plot, but it should give you a sense of the storyline: https://www.nytimes.com/2018/10/14/arts/music/hadrian-opera-review-rufus-wainwright.html