Thanks Rob123. Our stories and timelines are very similar. My wife actually did this same thing 6 years ago too, and it wasn't until we were separated for several months and actually filed that she asked to come back. In many ways it was way easier to detach when we weren't under the same roof.
I too feel/felt like I have to be home all the time because of our kids and my wife's busy schedule. So, I was/am probably totally co-dependent as well.
How do you work out the logistics of going out and/or taking the kids out?