It's normal la for guys with gf already too still look at pretty girls. Human are always attracted to something nice ma, no matter is girl or guy all the same one. You walk at the mall and notice a tall handsome guy you also cant help but to take extra few glance at him one. Looking at pretty girl and being loyal is 2 different thing.

And about ONS, that one is the loyal part. Maybe you should ask are all guy loyal to their current gf ? I always can't help but to look at pretty girl or girls that really dress up nicely and clean, even handsome guy or guy who reallt dress up nicely I also cant help but to take extra few glance. This is just human nature, we like to look at something nice and attractive. But no matter how many girls i look at I'm still loyal to my gf.

I would go out and admire pretty girl and maybe look for chance to know them. But when it comes to having a stable relationship, I only look for girls which I like to live with, appearance is not first priority, it's the feel of comfort when you both be togehter thats important.

So conclusion, I like to look at pretty girl(and sometime guy) but that doesn't mean I want to own them all pretty girl, just admiring them thats all.(Though if got chance own all thn......... )