I want to throw this out there and see what other people think or have done.

I just read online that I should expose my W affair. If I do this it will be to her sister, and also send an email (FB) message to the OP. That if I do this it makes my W face reality and that what she is doing is NOT okay. That there will be a lot of negative emotions right away but that's to be expected. That it's like taking the crack pipe of the hands of a person addicted to crack.

So what have other people done?