Hi South. Sorry you going through this tough patch. I can only offer my humble opinion but you need to have a man to man with S. He's the adult , sitch is tough on everyone but you all need to pull together. Reading your posts it seems , like us all, you are up and down. For the kids you have to be up , your their rock , their lighthouse , your the parent who's there !!!! You have to man up. ( easy for me to say ). You have no choice. It's sh1t but it is what it is. Your children need you. Set down ground rules for them both and stick to them. Again. I am very far from an expert so please take what you want from this post. I feel your pain but WE have no choice Keep strong buddy. Take care