updated 04/05/2013 AT 10:00 AM ET
•originally published 04/05/2013 AT 12:45 PM ET
But she remains focused on staying tight. “You just have to make that your number one priority,” Underwood, 30, who graces PEOPLE’s current cover, said backstage at American Idol Thursday night.
“You see each other when you can and you talk to each other as much as you can,” the singer told PEOPLE. “You just have to commit and make it work.”