"It's Not Just a Guy Thing"

Here is a helpful article by Tim Challies about "the second look." Here is what he means when it comes to men:

When you see an attractive woman, you are morally responsible for the second glance, not the first. Because you cannot help seeing what is there in front of you, the second glance is the one where you will display sin or virtue. It is here that you make the moral choice—the choice to lust or the choice to direct your eyes and your thoughts to something that honors God. 

He goes on to explain why this issue is also faced by women (even if in a slightly different way). He then goes on to explain why it is also true that we can be morally responsible for the first glance.

I could summarize it, but it is short enough for you to read the whole thing.