I used to believe that, since heterosexual men are attracted to heterosexual women and vice versa, therefore homosexual men would be attracted to homosexual women and vice versa.
It seemed PERFECTLY logical at the time.
A childhood belief about sex

others believed things like this
- when i was little thought that ants changed traffic lights from green to red and vice versa.Anon
- I used to believe that a homosexual is a man who doesn't have erection. — paatrik
- i used to believe that homosexual meant that you did it with stuff in the home— kristin
- I asked my mother what a 'homosexual' was when I was 11. She said it was when men danced together.— Nick Tucker
- I used to belive that homo milk was from gay (homosexual) cows— Drunky Munky
- When people wrote GSOH in a personal ad, I thought it meant "gay, straight or homosexual".— Mat