[EzequielTMann]

The only good thing to come out of being "friends with girls", is when some guy has a hot sister/ friend/ mom etc and He fancies the hell outta one of your "girl friends".
You can then give him some tips on how best to approach the "girls", whilst having free rein to approach and ultimately screw his sister, friend or if she's hot and he's not arsed, His mom.

It does mean that your doing the dirty on your "girl friend", but if your not shagging her, then your not losing much, by being a bitch!