Faith, Keep us posted on what is happening. It is really tempting to look at the small details, but the best thing you can do is keep doing for yourself. As someone who has recently been through a similar scenario, watching the minutia will only come back and haunt you. If you end up back together these details may hurt you emotionally, especially if they are discussed. If you do not end up together you will hold more resentment and feel you got your hopes up and wasted your time. Keep the focus on you and the kids.
Lastly, CONGRATS on 90 days sober. That is no easy task. The health benefits will pay dividends in the future! If nothing else, that is a huge silver lining behind all of this.