Well, if there was any doubt about how John Mayer feels about Katy Perry, the singer put those fears to rest with the release of the couple's new music video 'Who You Love'.  It's the first time Mayer has ever put his love for someone on display so blatantly in the public eye.  The way these two look at each other is supremely romantic, and I think it's the most relaxed I've ever seen Mayer.  The couple premiered the clip for 'Who You Love' live on Good Morning America Tuesday, as all of Times Square in NY watched on the jumbotrons above.  You don't get a bigger declaration of love than that.