Celebrities and link-ups go hand in hand. You're not allowed to hang out (Uday-Parineeti), kiss goodbye (Ness-Nargis), be 'just' friends (Rana-Bips) or simply bond with a co-star (SRK-PC). Check out some recent dating rumours.  Uday Chopra and Parineeti Chopra have been spotted together at various nightspots, sparking rumours that there's...