I know how you feel about the person seeming like a stranger. I also know the feeling of thinking your H was never real in the first place. I would swear both of these to be true in my sitch too.
But... then I remember that he is in the 'fog' and not thinking clearly.
Continue to DB but maybe give yourself a break for a couple days.
Have you and your H talked about D/parent counseling for the sake of your D3?
(Formerly blgp) Me-35 H-33 Married 4 yrs Together 9 yrs "Bomb" 8/1/10 Separated 8/6/10 D filed 10/21/10, on hold til 1/11
"If you want to hear God laugh, tell Him about your life plans."