The King's Speech: Unconsummated
You know how you watch something and you get a drabble in mind and you know that's all you'll ever do for that fandom? That's this.
Bertie loves his Elizabeth; Lionel loves his Myrtle likewise. Bertie is the heir presumptive, and then the king. Lionel is Bertie's *doctor,* or at least confidant and advisor, bound by oath no matter his lack of degree. That last, if nothing else, stands as the greatest barrier to impropriety.
Theirs is a romance of the heart and of the voice. Neither feels the lack of more, particularly, given circumstance and inclination. But when Bertie speaks pure and clear, Lionel hears love.