I'm lucky that there are a fair number of Al-Anon meetings around, only one Nar-anon in the whole area here, but I'm thinking of checking that out too. It's worth trying out...I've gone to some really small meetings-literally only 4 people there!-so I stopped going, but I'm giving it a try again at a different place.
I hope things continue to go well for you...this is an awful thing to deal with. I certainly don't want to sound negative, but I guess I'm surprised your boyfriend would be so up and out and about after having used so long, whether it was on and off or not. And I know from what my boyfriend and others have told me, that devil doesn't just let go. I was around, his daughter was around, he had work...yet still he used. Like he said, nothing stops him but him.
Anyways, praying for you, hoping for the best!