As I said, I don't believe he'll ever tell his wife
Why would he? He knows he can string your wife along and you are too scared to do the right thing. I know you are new here but the advice you are getting works. Waiting is not a plan.
M22,H45,W45 S21/18D12 Retain faith that you will prevail in the end, regardless of the difficulties and at the same time confront the most brutal facts of your current reality, whatever they might be.