I am in a similar position only we don't live together.I only thought it was recreation until I left my husband then it all came to light.
Addicts especially cocaine heads are 2 people are you as thier partner are on the same rollercoaster.When they are up and when they are down.
It is absolutely heart breaking to watch someone you love be controlled by a substance.
He has to want to get help.
Nothing will work until he does.
I have spent so much time crying my heart out.Get out and live on your own if you can then at least you can bypass the comedowns and he can't spend all your money.
My heart goes out to you.xxxx