Don't know how it is for you guys, but growing up there were always these "rules"
- If ya boy is scheming on a girl and he tells you, that chick is off limits until he says "Fcuk it"
- Don't go after ya boy's ex
- Don't go after ya boy's sister/cousin etc
From what I've heard girls don't have these restrictions, heard way too many stories of girls who were "best friends" (and they always have like 15 "best" friends) just totally stop talking to each other over some guy. Most guys I know value friendship over women because the former is harder to obtain than the latter (for most guys), while it seems to be the contrary for girls.
And waaaaay too many GIRLS have told me they'f rather avoid...other girls