Wyoming removed the option of an at-fault divorce some years ago – to streamline the divorce process and remove unnecessary delays and court action.
So, Wyoming is a “no-fault” divorce state, meaning that spouses do not need to prove who was at fault for the marriage breakdown. In the past, this was often a complex and protracted process that took up court time unnecessarily.
Now, spouses only need to show that there are “irreconcilable differences” or one of the spouses has “incurable insanity”.
In most divorce cases, one or both spouses testify in court that there are “irreconcilable differences”. That may be sufficient for the judge to sign the decree and grant the divorce.
In contested divorces, either spouse may bring up the errant behavior of the other spouse as evidence to the judge when considering disputed aspects of the divorce like property division or child custody decisions.