Hi -my partner is the same. I have just posted about his drinking but he also into coke and weed and has been since his teens. Now early thirties, he is trying to change because of his children but I’m not convinced now he can. We live together but I am in a state now where he gets his stuff together and sorts himself out or he goes. Sadness is I know I will be making him homeless if I do that so full of guilt.
I am trying to get him some counselling and hope that helps. I too can see a good future for us but definitely not like this.
Let me know how you get on – I’m about to go down the same route as you with trying to help. All I will say is look after yourself first 🙂