"I don't think anyone talks to Meg. She's always been a hermit," he said. "When we lived in Detroit, I'd have to drive over to her house if I wanted to talk to her, so now it's almost never."

While Jack wouldn't go into detail about their personal relationship, he gave some insight into what their musical collaborations were like. "She's one of those people who won't high-five me when I get the touchdown," he said.