If a woman you had a relationship was sometimes cruel, complaining, always found fault with just about...?

it shouldn't matter if she's done it to other boyfriends, what matters is that she's doing to you. you should ask yourself if that is something you can handle, whether the relationship had progressed enough for you to stay and try to work thinkgs out? if she did treat her other boyfriends like she's treating you i wouldn't be surprised if they dumped her and moved on.