I think she is a girl who uses her relationships to make her happy, buy her drinks and drive her to the bar. She uses you until you are all used up never apologizing for anything and blaming all of the problems in the relationship on you. Once your all used up and she thinks you had enough she tosses you out like week old trash goes and finds a replacement right away while your left picking up the pieces of your devastated life, and she feels no remorse whatsoever. It didn't matter to her that we were engaged it didn't matter we spent close to 4 years together.