It's indifferance and it's a beautiful place to be. Your soul is finally taking notice that there is really nothing about this man you want to love romantically.
He's tapped you dry
Letting him think there is a chance is maybe a part of you that wants him to hurt like he hurt you. I think it's a normal reaction to want the person who causes you the most pain ever to want to feel some back.
Personally, if I had no feelings left, I would just smile and walk away relieved it was all over.
White flag and all :-)