Most Helpful Guy
You need to get the kids out of there ASAP and yourself. He can't get better until he hits rock bottom and you and the kids leaving may finally help him get there and he stops. Be stern, don't let him see the kids and make sure he makes an effort to get clean.
Most Helpful Girl
Well you love him. But if he loves you i think he could change for you, i think you should talk to him, and be really really serious about it, tell him to get help, and that you're worried, if he doesn't give a crap it's not worth it sadly, He gotta listen to you too, if he loves you he would do anything for you, and help you. Give him one last chance to change, if he doesn't, then i would say you should leave :/