His words mean nothing, actions, actions and more positive actions. If he wants recovery, he will let nothing or anyone stand in his way. He will be on the phone finding out where meeting are and attending them without being told to do so. Remember this is his addiction, his responsibility to resolve.
If he on crack, this recovery is going to be a difficult one at best. It is a very difficult addiction to overcome.
If it were me, there is no way that I would consider going forward with the marriage. He needs to get clean and work a strong recovery program for at least a year, before I would entertain marrying this man.
What do you know about addiction,codependcey and enabling? He is the addict, you are the codependent enabler, you both need recovery. I would suggest you attend Alanon or Naranon meetings for your issues and read Codependent No More by Melody Beattie.
In addition, read around this board, it will help you understand what you are and will be dealing with.
Keep posting, it will help.