You're right and I've known that for months. I've not figured out what I'm supposed to do and I keep digging myself a bigger hole to the point that my wife wants me out. Neither of us are going anywhere (as far as I know) so I have to figure something out and I've taken the first steps by setting up a private living space.
My interpretation of what you're saying is to forget about what she thinks and just act as if everything is fine between us. I feel I've done enough damage that she'll tell me to F-off if I try and get friendly with her, hence trying avoidance and hoping that by keeping out of her face the tension will ease.
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