Actually, I can relate to this dynamic in a relationship, but not the way you think. I was in the "victim" role with my first serious boyfriend. YES, his ethics and values were poor and he took advantage of me, BUT I allowed it.
Which part of this picture do you imagine you have control over?
A + B = C
A is a constant figure, and cannot be changed.
B is a variable.
In order to change the outcome (C), what would YOU do?