this is a tough one, I found out about my H's A through snooping, he still holds a grudge that I invaded his privacy even though what he did was worse (he thinks it's a different kind of violation, my prying into his stuff.)
This is just me, but if I were in that position I'd let my S know I know, wouldnt' tell them how though.
...but we also rejoice in our sufferings, because we know that suffering produces perseverance; perseverance, character; and character, hope.
piecing after separation