A majority of Stormont Assembly members have for the first time voted to legalise same-sex marriage in Northern Ireland.
However a voting mechanism triggered by the Democratic Unionists means the law change will not happen.
The veto means the motion falls short of getting the necessary support from both major communities.
It is the fifth time that MLAs in Stormont have been asked to vote on calls for full marriage equality.
53 MLAs voted in favour of the call, out of 105 voters.
Northern Ireland is now the only country in the UK to not recognise same-sex unions.
It also follows the signing into law of the Marriage Act to give same-sex couples full marriage in the Republic.
The DUP finance minister Arlene Foster says it is not fair that members are asked to debate the same issue again and again.
Sinn Féin's Caitriona Ruane was one of the politicians speaking in favour.