IS IT OK???

On so many occasions, I have had the opportunity to be the listening ear to quite a number of my girlfriends. They usually come around to have a shoulder to lean on and vent, and in most cases i ended up being the shrink to the 'patient(s) on the couch'.
We as females all know that its an 'unwritten code' to date a friend's (ex) guy even if they are no longer together. I have never been in that situation before on either sides of the coin and i know that as humans we are so quick to judge and point accusing  fingers at d 'culprit' in question.
Therefore I ask: Is It ok?????