You don't have to necessarily say "being gay is ok!"
Kids should be presented with facts. There are gay people, there are straight people. There is religion, there is athiesm, there is etc etc.
LET the child decide what is RIGHT FOR HIM/HER. In their mind, they should be able to form their own opinions without being overly influenced by the opinions of their parents.
I absolutely hated being forced to go to church when I was younger, what do you think my anti-religiousness came from? Do not FORCE opinions on children, offer them the opinions when they're old enough to think for themselves and let them decide.
i see we share more than a first name.