Hi Humminbird (aren't they beautiful?) and welcome.
I think when we drink we not only attract other alcoholics, we are also attracted to alcoholics and why not? Something in common. It's tough to escape the cycle, but you made a great start by joining SR. Also remember, at this point you and your drinking or rather stopping is priority, not trying to help others stop drinking.
That is entirely up to him. You need to concentrate on your recovery. Hang in there.