I can SO relate
Same thing I'm going through here. Although THIS time, I didnt let him come back home. I see him when I want to, and still live my life for me. Yes, it is really hard having a line drawn, but the line protects me too. I struggle with the idea that yes he is clean right now, but will it last? and what are the chances that he will repeat the same pattern?
It is very difficult when the person that destroyed you is now "almost" the person that you fell in love with. For the first time in my life, things are on MY terms and not his. I had pretty much no-contact for about a year because he was incarcerated and possibly that gave me the strength not to cave into his tears and promises again?
I made the decision that for right now, NOBODY is going to have that kind of power over my heart, that I am in self-preservation mode.
Before I make a decsion I ask myself "Will this benefit me and/or my kids" and as far as I'm concerned that is all that matters right now.
The best "advice" I can give you is..BE true to Yourself!! Good Luck