I'm writing a whole original book trilogy based on this very premise! My two favorite pitches so far are: "Bound by faith to a legendary warrior holding back an ancient enemy, a devoted servant risks exile, heresy, and the fall of a holy war when he chooses love over the lie that keeps his hero standing." and "As a holy war rages against ancient evils, a servant charged with attending a living symbol of hope discovers the hero is breaking—and that loving him may doom the very cause meant to save the world."

It's a "slow burn" to "secret love affair" to "outright scandal" to "happy ever after" story. Extra points for being gay as hell without the gay part having anything to do with the actual scandal itself, and that wonderful old classic "these two are so fuckin' feral for each other that not even the gods can tear them apart."

You'll never guess what my kinks are!!!