WAW and the law of attraction

[FormelyknownasF]

I'm working really hard in finding this OM's W name. But Im just thinking she's going to need proof about the affair and because they kept it secret, it's going to be hard.
I have some pictures but that's going to track the whole think to me and I was advice on this thread not to expose the affair to her. I'm not sure I want to do that. Should I?

Pls, I need ideas on how to drop the bomb on this OM's W.
Would posting something on his facebook wall be enough?
Friends and family will find out.