Females are more about guys who can take care of them, love them, make them feel good, have good personalities and are basically good husband/father material. We're more on the emotional side of things.
Males are more about looking at females. That's why pretty much any guy you meet looks at women on the internet or magazines, even if they have a GF/wife. It doesn't mean they love their GF/wife any less, it's just a thing guys do. Looking at girls on the net means no strings attached. He can get his visual without having to cheat. I'd rather have my man look at a woman on the net he has no chance with than have him out on the prowl for people he can easily get with if he wanted to