in my opinion, exposure, like justice, needs to be swift and sure. it is best to expose early on before emotional bonds are too tight to pull apart. the worst thing that you can do to stop an affair is nothing.
the goal of DBing's LRT, 180s, etc. is to get the LBS in a better position to move forward with his/her life, irregardless of whether reconciliation or the end of the relationship is going to occur. but specifically towards the affair, it is essentially sitting idly by and doing nothing.
