from what i have read here, you seem to have a problem with your temper, and i think most people would find that sort of behaviour threatening,especially in an enclosed space like a car as you say.i can only imagine what sort of fright you gave her, and might make her worry about what you'll do next.ishe has only known you a few months.f i were you i wouldnt give up just yet, just explain that you will try and deal with arguments in a different way in future and walk away to cool off if need be.let her mull over it, and if its meant to be, she'll give you another chance.