Man doesn't need to learn how to perv. I suspect cavemen did it. Maybe even Apes. It's in the DNA of man, although some try to deny it these days. Most of the gals don't mind it all that much either and you are not fooling them by trying to hide it. Actually a look followed by direct eye contact often bears fruit.Healthy minded women like to be admired for physical beauty.
As long as you don't cross over into pervert it's all good.
