The tension is always present between Salman Khan and his ek-girlfriend Katrina Kaif. Even though Salman has not been in her life for some time now, Kat made it a point to let bygones be bygones and attend Salman's sister Arpita Khan's wedding in Hyderabad last week. We all know how that turned, right? Watch the video to know what Salman did to upset Katrina so much that she didn't show up to the wedding reception.  Show less