'Could you be the one without a doubt?': Jennifer Lopez releases song Us that appears to be about Alex Rodriguez as engagement rumours persist.<br /><br />Jennifer Lopez released the song Us on Friday.<br />The up-tempo dance tune appears to be about her new beau Alex Rodriguez as the lyrics include, 'Could you be the one without a doubt?'<br />The 48-year-old siren is releasing a new album by the end of the year.<br />
