Couldn't agree more with Dee and Anna, Nursey2680.
Relapse happens, but it's not part of recovery. Polar opposites.
If he tells you it's part of recovery he's giving himself the biggest 'out' ever. Recovery, means recovery.
Good idea to check out Family & Friends, here, but seriously Nursey I wouldn't be waiting forever. You can only take so much.
You deserve better.