Barrett and Foehner met as contestants on ‘American Idol’ in 2018 and got married in 2019Gabby Barett (left) and Cade Foehner on the 55th Annual GMA Dove Awards in Nashville, Tennessee in Oct. 2024Credit: Tibrina Hobson/GettyNEED TO KNOWGabby Barrett’s unreleased song, “Young,” which she shared on Instagram, responds to claims that she and her husband Cade Foehner were too young to get married“It must be written in the stars / So, what if we’re …