Bret Michaels, Miley Cyrus' Mom Had an Affair 14.48K Max Read 11/02/10 08:28PM Filed to: Weird Weird Miley Cyrus bret michaels Tish Cyrus Divorce Affairs tweet Fb According to Us Weekly, Tish Cyrus—mother of famed tween Miley—had an affair with Poison singer Bret Michaels. I don't know what to think about that, except I wonder why she didn't have to go through Rock of Love.