This is new initiative that the gay and lesbian alliance in Washington state is trying to get made into a bill.
Since gay marrage was turned down because as they said marrage is only for procreation, they then turned it around on the state and came up with this. If a couple does not have a baby within 3 years of getting married the marrage becomes annulled. Kind of funny and lame at the same time. Good luck getting the signatures to get this on the ballot.
Link