Rihanna vows never to cry in public

 Pop star Rihanna says she will never let her fans see her cry because she does not wish to show her vulnerable side to the public. She has become famous for her feisty and aggressive persona ever since she bounced back from her beating at the hands of ex-boyfriend Chris Brown in February 2009. "I do have a vulnerable side. I think a lot of people have a misperception of me. They only see the