What are the grounds for divorce in Wyoming?

A divorce may be decreed by the district court of the county in which either party resides on the complaint of the aggrieved party on the grounds of irreconcilable differences in the marital relationship.
 
A divorce may be granted when either party has become incurably insane and the insane person has been confined in a mental hospital of this state or of another state or territory for at least two (2) years immediately preceding the commencement of the action for divorce.