Of course! How could we overlook David who, for eons, has been known as EJ's squeeze (ugh!)
Just what can he possibly be dubbed?
He's too advanced in years to have a handle such as The Honourable Catamite.
I suppose, being logical, we should, when considering affairs of gender blending, look at a title that pays equal homage to the two heterosexual titles that apply; to both a Peer and a Knight, "Lord" "Sir" and "Lady".
The best that I can up with is "Lardy" which, I think you will agree is a very satisfactory outcome, not to say, appropriate, even.
So, from now on it's a round of applause, if you will, for Sir Elton and Lardy John - perfect!