Thinking of linking up with someone from Ashley Madison? Unless you want to end up in the clink, you may want to think twice.

This summer, two Idaho lawmakers had an extramarital affair and the story was everywhere. While they weren't charged with a crime, they very well could have been.

In Idaho, adultery has been considered a felony since 1972. Rarely will someone actually be charged with the crime, but legally they very well could be. The charge? Up to three years in prison and a $1,000 fine. Adultery actually holds a harsher punishment than most animal cruelty laws in the gem sate.

Adultery is illegal in almost half the states in the U.S., but Idaho is one of the few to actually classify it as a felony.