There is NO, not ONE scintilla of evidence that da Vinci was gay.
None
nada
there is, however, clues that he was a Cathar...which he would have had to keep secret if he had no desire to become a human teriaki. He was known to dress in white - as did Cathars.
Also, if I remember right, Cathar leaders often didn't marry.
AT any rate, there IS evidence he was a Cather - there is NO evidence he was gay - other than the gay communities lust to name everyone who didn't marry and ‘AH HA, one of US!’
On the other side of the coin, a lot of gays - still - marry for ‘cover. So marriage or lack of it proves nothing.
As an aside, the Mona Lisa we see today has no resemblance to La Gioconda, whom he was commissioned to paint. I've seen a photo of the original cartoon (sketches) of La Gioconda and she looked totally different. He never finished or deliver the portrait - but, as many artists do - and particularly artists back then, with materials so dear, used the canvas to paint over - using the same pose, but different face. I have my own theory as to who he meant this to be and why the knowing/amused smile - and I have a good clue - but I'm not going to say...at this time.
Cathars were Occitanians not Milanese, their clergy practiced ritual suicide, they were forbidden to have any dealings with Catholics and taught to avoid Catholic holy places, they opposed the making or display of images and the King of France exterminated them three centuries before Leonardo was born. This theory is preposterous on numerous counts.
I never said anything about him being gay, I was merely pointing out the resemblance.