Married At First Sight season 18s participants are dealing with serious pressure as the season gets underway, but participants Karla & Juan teased a potentially positive outcome for their relationship after years of low success for the series. Throughout Married At First Sight history, the series has matched up dozens of couples who have had the experience of a lifetime, whether it wound up in a successful relationship or not. With Married At First Sight season 18 just getting started, though, the pressure is on for the current couples to succeed, as matches in the last several seasons havent yielded success.