I use my toxic masculinity to counteract my girlfriend's cuntish femininity
Do you want to explain why you act like that?
No. I've had enough.
I respect you not wanting to talk about it any more.  However, let me just say that regardless of how she's acting, you shouldn't be toxic in return.  Being a toxic person is never okay.
I'm done. I'm done with the bullshit and lies. I'm not going to be blamed for this. I'm done with this relationship.
Still, you being toxic back to her only makes the situation more uncomfortable for both of you. Try to get some couple counseling.