T did admit it to J

I guess I could only take in so much when J was telling us about T.  I talked to J today about the heroin and he said that T did admit that he did "tried" it again.  Although he told J that he isn't doing it anymore - T's friends gave J the impression that he still  is.  
Now that my husband seems to be willing to do what I think we need to do..... I am having a difficult time with it.  I am not sure what to do and as the therapist said "I don't think you're ready yet, either".  I thought he doesn't know me." Well, maybe he does! 
My thoughts:  Give him some options - drug testing, AA, and open to treatment or if he can't abide by these - he can't live here anymore.  Much easier said then done.  Sigh