Not only is Katy Perry's tune "Part Of Me" not about ex Russell Brand, but the singer recently revealed that she was told to lie about it. "Some people that I work with were like 'You should say you wrote it a couple weeks ago,'" Perry said of the her emotional Grammys tune, according to MTV news. "I'm like, 'I'm not a douchebag. I'm going to tell the truth." Perry's lyrics, "You can keep the diamond ring/It don't mean nothing anyway/ In fact, you can keep everything -- except for me," seemed...