..."all guys that hang with girls will cheat" type of thought is tough to swallow.
I think the issue is that the line between "just friends" and an EA can be very blurry, particularly to the participants. The metaphor that's often used is that if you put a frog in water and slowly elevate the temperature, the frog will eventually cook because the temperature is rising so slowly that the frog doesn't realize it's in trouble.
