I kind of am in somewhat of the same situation. We do not have kids but my bf is in a sober living house. I feel like he is drifting away from me and wanting to just focus on him an d not be with me. It is a struggle because ultimately I just want him to be clean and healthy but I'm scared that means we are done. I have committed 12 years of my life to him. It is rough and I'm really struggling with it but I know I will be ok no matter what. I think my biggest help has been that I have a wonderful career and support system. I would encourage you to just keep your feet planted and move forward. If time has you two rekindle then that is great, but you need things to help you stay focused on you and your son.