Albus is gay - JK Rowling

It came as a shock that J.K. Rowling made a revelation that she thought Albus Dumbledore was gay and that he had feelings for Grindewald, which feelings led him to conquered him after he realized he was not after his friendship but his knowledge of the Deathly Hallows.

It made me think of other Harry Potter characters who could be gay, and I thought of Sirius - his affection for James and later on Harry (which is probably fatherly, him being James' son). It was not mentioned that Sirius was ever interested in women (when Lupin and even Snape were).

Just speculating. :)