Yes....we do understand what it's like to love an addict. We understand the confusion, anger, fear, obsession and chaos.
I was married to an addict many years ago. He was a lot like your fellow. And it was hard to leave him. Really hard. But I did it for my baby son and me. I knew that staying with him would not be a good life for us.
Take care of you and that little one. Let the full grown man take care of himself and decide what course his life is going to take. The baby needs a stable, loving and consistent parent.
Breathe and take it one day at a time.
gentle hugs
ke