Why say anything? If you're going to go, just pack your stuff and leave without saying anything. If you're going to stay, just get on with your life without saying anything. Moral of the story: less talk and more action.
Me: 31, W: 29 T: 4 M: 2 Kids: 3 (SS: 7, SD: 4, D: 3) Separated, still living together: Nov 2013 Separate bedrooms: Feb 2014 W working away; kids with me: Nov 2014