Fiance Battleing Meth Addiction. Need Advice

Hi my fiance has a meth addiction that ive kniwn about. Hes been a meth user on and off for about two years now. He has gone to treatment and was clean for six months. He has rectently fallen back in the hole and is asking me for help. Ive never used so i really dont know how to help. We also have a three year old and a one year old together. He dont use everyday but if it gets offered he accepts. I feel like when he uses he burns down everything we just rebuilt. I kniw this is his problem but how do i encourage him in the right direction? How do i help him see the positive. He uses when he goes to the casino and ends up staying there for three days. This occurs at least once a month when hes been usig. The hard part for me is hes a stay at home dad while i work. But it seems as if i cant trust him. I just need some advice on what steps i should take for my own sanity. And if hes asking me for help what i can do to be supportive. I think the hardest part for me is knowing hes about to go get high and i cant do anything to stop it. It often leads to a fight. Im losing my self,trying to save him it feels like.
Read the posts in the "Families & Partners" forum.

You will hear your story told literally word for word repeatedly.

You will also hear what the answer is in those posts.

Good luck.

Bob R