Now that no-fault divorce law is the law of the land, the concept of adultery may strike some as irrelevant.

But not so fast. There is still the matter of child custody, and adultery could still potentially come into play there.

Oh, and then there’s criminal law. Although a lot of folks may not know it, adultery is illegal in some states. Yes, really.

Colorado is one of them. And Florida is another. And they have plenty of company in the US.

Are there a lot of prosecutions of this crime these days?

Well, that’s another story. But the criminal statutes are still on the books, available to be used.

Read more in this Wall Street Journal piece: Adultery Remains a (Legal) No-No in Colorado.