I have been a crossdresser for over 60 years, and in that time have only been asked if I was "gay" a very few times. And of course it was always by a female shopper!! My usual response has always been, no I am not Gay, I just like to wear feminine clothes! That almost always makes them shut up!!
Like Leah I have friends that are gay, and I also have friends that are lesbians!! We are all people, and thank God we are not all the same!
