I had a girlfriend like that too. Always moaning about stupid shit, getting pissed off when I didn't text back within like 10 minutes, always on my case. I had to break up with her before I went batshit insane. It sucks because her body was fucking amazing, I was punching well above my weight (not literally), but after all that bullshit you have to care more about your mind than your dick.
Better hope you didn't break up with her, she will try to come running back. If she broke up with you then your safe.
I did break up with her and she has called a bunch of times and e-mailed me, etc. Not a fucking chance I'm letting that nutty bitch back in my life. I was out of that relationship for about a year and a half, so I didn't give a shit when it was over. I never cheated though, despite no man in the history of existence having more of a right to do so than me. She was going to her mother's for 2 weeks starting Oct 2nd and I was just going to pack her shit up and send it to her there. But she was going insane, as usual, and I just couldn't stand to look at her cunty face anymore and kicked her out. The weight that was immediately lifted off my shoulders was insane. I have a bleeding ulcer from that twat and in just the 3 days I've been away from her my stomach already feels 10X better.
She's back home now, 4 hours away from me. Back with her family of leeches, where she deserves to be.
Also, I agree with CamillePunk. Get that black azz over here babeh.