When u confront a person, with what they did wrong, and they don't want to take responsibility for their own actions, they will manipulate u by putting the focus back on u. They will bring up something u did or need to do, using ur imperfection as a way to avoid taking responsibility for their own actions. They actually like knowing ur difficulties or imperfections. This gives them ammunition, and they have something to hold over ur head to use against u. (Put the focus back on them where it belongs).