I know it's hard to be around other people when they are using Eunectes, but YOU don't have to use.
Do you have your friend staying because it helps with rent, expenses, etc? I know, I'm living off the smell of an oil rag myself.
. But I'd rather live on beans and rice than share my flat with someone who was using/drinking.
I notice that you come from Scotland. Do you not have free rehabs in Scotland under NHS as here in Australia? Or is it a matter of waiting til a bed is available?
Maybe it would be a good idea to go to an NA meeting (even if you don't like 12 Step Recovery) because people in those rooms have a lot of inside knowledge on how to go about getting yourself help. They will offer you support, no risk.
You introduce as being nearly 18 months off the grog Eunectes and take my hat off to you.
This in itself shows that you CAN do it. You've just got to take that next step into ditching the rest and getting support through here to start Eunectes. Keep posting.
If your consumption has increased by 70% since your friend moved in I'd be asking him to move, and give the reasons why. That is, you want to get well. And that ain't no lie. Good start.