"He's trying to destroy his career," Corgan told Rolling Stone. "Rather than take a year off or change his musical direction ... some part of it is irritating his soul to the point where he's trying to blow it up."
Corgan further said of his fellow musician, "Certainly a talented guy, but empathetically, standing on the sidelines, it's hard to watch someone literally burn their career to the ground. Speaking as somebody who's done it."
In the same interview, the Smashing Pumpkins founder revealed that he's got feelings for Simpson. The two recently collaborated on the theme song for Simpson's new VH1 reality show, "The Price of Beauty."
"If I go, 'Oh, we're just friends,' then it's like, 'Did they go out, did he dump her or she dump him, what happened?' It has nothing to do with any of that. Sometimes people just like being around each other, and good things come out of that," he told the magazine about the nature of his relationship with Simpson. "My goal in life is to love whoever I think is worth loving, and I think if people knew her like I knew her, they would love her like I do. It's really simple."
Simpson seems to be taking this all in stride. She laughed off Mayer's comments when she appeared on "Late Night With David Letterman" on Wednesday night.