The couple, who were married in England last year, have begun a court challenge to Northern Ireland’s marriage laws.
It is the only part of the UK and Ireland that bans same-sex marriage.
Their barrister said they were stripped of lawful marriage at home, with their rights “returning and disappearing” as they cross state lines.
The couple have taken a case at the High Court in Belfast in an attempt to get the court to declare that their marriage remains fully constituted throughout the UK.
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