So I used to be close to someone who admitted to me that she is "future-faking" with her boyfriend for material reasons.

If you are not familiar with future-faking, you can read it here:

Narcissists & The Art of Future-Faking

It's basically creating false future expectations (like "I will meet your parents") without following through, so she can get what she wants at the moment.

This person was also highly vindictive with her ex-boyfriend.

So I initially thought that she had an issue with men but not necessarily unsafe as a girlfriend.

I was wrong.

I eventually found out that she was also using me, while talking as if I will have a permanent place in her inner circle.

She also became vindictive towards me when she didn't get her way.

So I think character is a human problem rather than a gender one, but I'm curious to hear about other people's experiences since it may differ from my own.

Are girlfriends exempt from being harmed by a woman who treat men badly?