Can you tell if the two person are dating even if they are not touching each other or holding hands in public? Anyway, Jessica Biel seems so very careful with the paparazzi to catch her and Justin Timberlake holding hands in public to stay away from gossips.
Justin seems so afraid that he might can't control himself from Jessica's rule's of engagement (Don't Touch Me in Public! Rule). So better put your hands inside your pocket justin and wait until you both reach home privately.
So Jessica is playing it safe...