Who Are You?

You know that moment during the climax of a film when everything you've just seen changes because of a big reveal?  That point when a new perspective is introduced and there are flashbacks to different scenes that you can now interpret with "the whole story"..well real life isn't like that, but aha moments can really seem that way. How shocking could it be to discover one lie?  Enough to change a whole plot?

It certainly feels that way.  There's no trust here.  It's as if years and years and years of this relationship were ingenuine.  How many times was I lied to and what about?  How could I have not known about this double life and which one is the real you?  Or is there really only one?  Which one are you?  Who are you?