>>98961888One has dick, the other has not. And since most humans are uncreative consumers, most people can't imagine penetrative sex without a penis.
And it's vital to girls too know what attracts men and why they would prefer to bang other chicks instead of her, so she needs slight attraction to women as well.
For example you do hear them comment "you are hot/sexy/cute" to each other and the occasional "if I was a guy, I'd totally do you". If a guy would usher this to other guys, he's totally gay.
