The bassist of newly reformed rockers Fall Out Boy has opened up about the band's hiatus and confessed that he developed an addiction to Xanax and Klonopin, which soon became damaging and debilitating.

Pete Wentz told the new issue of Rolling Stone magazine that he struggled with anxiety so began taking medication for it, but ended up becoming dependant on it: "I was probably physically and mentally addicted. It started from insomnia and anxiety from flying, then it spiralled."

The 'Sugar We're Going Down' hitmaker explained that he then split from his wife, Ashlee Simpson, and things spiralled out of control: "I felt like a loser already. I'd basically gone from being the guy in Fall Out Boy to being the guy, who, like, hangs out all day. I didn't see how I'd ever come out on the other side."

"I was scared of everything. I thought there were always people listening to me... I had my house searched for bugs. It was crazy."

He credited being a father to four-year-old Bronx with helping him get back on track, adding: "You're up in the morning, and you have to really be there. It's not like getting up for a radio interview. In some ways, that was super helpful for my soul."