"I don't want some guy looking at me the way that I look at girls." That's the claim by many straight men who cannot stand to have gay men alongside them in the lockerroom.
This says less about homophobia, and much, much more about the way men treat women.
A few years ago, a class in an American high school was discussing homophobia. A boy in the class declared he didn't like being "looked at that way". The boy said he felt he might be physically overpowered and raped by gay men. The teacher then asked the class if anyone else had had a similar experience.
Every girl's hand went up.