With few exceptions, I cannot work with a woman without thinking about having sex with her. It's not like I'm trying, it's more like the thought is a blinking red light and I can't help but look at the thought. Then I realize the thought is absurd, but it's already happened. This normally doesn't leak out, but for some women, I will give them "eyes" and usually feel bad about it afterwards. But that can be persistent, and for the woman, must be kind of creepy feeling.
I'd love for this to not be the case, but after years of it, I'm at a loss as to how a man changes this somewhat foundational part of the brain.
The women for whom I don't have that thought almost always follow remarkably strict professional conduct to a T. The equivalent for a man would be top-button done up and formal slacks every day, never smiling. I actually really like working with these women because it's kind of a relief.