My experience, too, is that I wasn't at all aware of sexuality at age 5, or 8, for that matter. I was curious about girls because I knew they were "different" somehow, but I damn sure didn't want to be seen playing with one or any such thing. (That started fading fast at 12 or 13......)
But I also don't think that there is too much doubt left that gay guys (and gals?) are probably "born that way" - when a single gene makes
Drosophila homosexual, and a particular lineage of sheep are homosexual, and human twin studies show a huge difference between the gayness of identical vs. fraternal twins.....
Too much evidence is mounting up to discount a genetic and/or pre-birth influence on homosexuality.