That was my biggest problem, THE FRIEND. That was what I blame his first relapse on. This guy is what I consider evil. Just keep pushing until you give in and have a drink and smoke. The problem is that they're everywhere and the A must learn how to cope. 6 months of sobriety thrown away for what. Sure wish my A's desire to quit would have been greater than THE FRIEND's hold over him. Now that time (six months of sobriety) is just a memory of the only REAL time we ever had in 16 years of marriage. Wishing you all the best.
P.S. I don't hold a grudge against THE FRIEND cause I know he didn't cause it, can't control it, can't cure it any more than I can. If the A didn't want to drink he wouldn't have. My old A mentor used to go around THE FRIEND all the time and turned down those same pushes.