The twelfth season of Married at First Sight premiered on 27 January 2025 on the Nine Network. Relationship advisors John Aiken and Mel Schilling, alongside sexologist Alessandra Rampolla, all returned to match ten brides and ten grooms. Halfway through the experiment, the experts matched another three brides and three grooms together, including couple number 2 who had exited, returned as separate bride and groom to form two new couples.