I know that's what YOU were saying, but I'M saying that the cheating spouse is an adult, and unless you can prove she (or he) is flat-out incapable of making right-and-wrong decisions (plead -- and prove -- insanity, or some other mental illness) that I'm not buying the "ooh, I was weak and manipulated" argument. They're ADULTS, and very different from your molested child example, which is very different.
My point was a different one -- that the CHEATING SPOUSE should be able to be held accountable, legally. At LEAST with a "fault" grounds on the basis of adultery.