I think it's goes along the same lines and a chick's friends can be called girlfriends, but a guy's friends are called guyfriends/ the guys

It just goes with making it seem more masculine

My girl has asked me what I thought of a guy's looks and, though a little offputting, I really don't have a problem with saying if a guy looks good. I deff wouldn't say he was attractive though as that'd be a little gay, lol

Unless asked, a guy will not say if another guy looks good/ attractive/ w/e. It's just not a guy thing to do. Blackberryfox pretty much said it in the last paragraph

It's just the social stigma we have