Kelly Clarkson has been making the press rounds to talk about her latest album, Piece by Piece , but she wasn’t just chatting about her music during an appearance on Watch What Happens Live with Andy Cohen on Thursday. Kelly played “Plead the Fifth” with Andy and admitted, finally, that she did in fact date her fellow American Idol contestant Justin Guarini. There was speculation that Kelly and Justin, who took first and second place, respectively, on the first-ever season of Idol in 2002, were dating at the time, but she cleared those rumors up saying, “We didn’t date during Idol , which everybody thought we were dating.