What is the female version of bros before hos?

I know between my friends it was an understanding that you NEVER DATED any of your friends exs. Now if it is no problem for the friend that previously went out with the guy that is one thing.

When you go out with someone for years though I think it is a different story.
This happened between two friends of mine.

I just do not agree with dating someone that a friend has previously dated. Not to mention my one friend just broke things off in January and was living with the guy. And the other friends motto was friends before guys. Oh how her motto has changed. She didn’t even have the decency to call the one friend before dating the guy. She called after a few dates! UN-FREAKIN-BELIEVABLE!

The one that went on the date pisses me off. I know that it is hard to find nice guys out there. But she knew her friend before him…. and she knew the whole story behind the breakup and the relationship and she still went out with him. I can’t believe that she didn’t think about things before going on a date with him. That it didn’t even cross her mind to call to see how her friend felt about it. That is unexcusable in my eyes. Definitely someone I don’t want to hang with anymore. I will miss alot of things about her and how we connected. But to do something and not think and be so hurtful! It is just wrong!

I am trying to think of something that rhymes… can’t think of it. But even so I think Bros before Hos sums it up, even for females.