That's right. We don't know much about what Alexander's sex life was like because THERE ARE NO SOURCES that detail this. The history doesn't exist. We do know he married at least one woman. Stone's effort to protray Alexander as homosexual is pure speculation based on virtually nothing.
Name a great man of history and the left eventually gets around to saying he was secretly a homosexual. Long after we're dead and gone some future lefties will say that Ronald Reagan was really gay but it was a well-kept secret. They'll cite they Hollywood lifestyles of the time and that he called Nancy "Mommy".
Heck, there's already a whispering campaign saying Dubya's really gay.