From my experience and observation it's usually due to:
- Their tendency to over think things.
- Their tendency to view other women as competition.
- Their inability to be direct when something is bothering them so they hold it inside and it eventually turns into resentment that trickles out in passive aggressive ways.
- Their inability to let things go (grudge holding).
I do have female friends, but one thing they all have in common is they're goofy, down-to-earth, and tomboyish, similar to myself.
They're not the typical women you run into.