When filing for a same-sex divorce in Washington, the Petitioner (the individual filing for divorce) doesn't need to explain, in detail, why they're filing for divorce. Instead, they can cite the state's only no-fault reason for divorce - the irretrievable breakdown of the marriage. This simply means the marriage is broken beyond repair and divorce is the only remaining option.
If the other partner doesn't dispute the divorce, upon a party’s request, the court can issue a final divorce decree 90 days after the official service of summons. On the contrary, if the other party disputes the divorce petition, the court will consider other reasons for the divorce. Ultimately, the divorce might be decided by a family court or a superior court.