Many addicts are serious about wanting to get sober and stay sober. Most, perhaps.
That's the easy part, "wanting" to be sober. Doing the work necessary to getting sober, learning a new way to live so that when cravings come along they will know how to not give in to them...and learning to take full responsibility for their actions previously and now...are a good start to "looking like" recovery. Blaming anyone or anything besides themselves is a sure sign that he's just not ready. Recovery is a personal self-help program.
Actions are what tells us what we need to know, words mean nothing when the actions don't follow.
I'm sorry for your pain, unless you want more of the same it may be a good time to take the lesson and move on.