when she offerred hand shake..it looked like teasng him if he ll be normal after whatever happened there lol..Arjun is smitten by her and its obvious to Saral - thats why that cold look when he bumped into Arjun outside the room but not Radhika because she wouldnt think Arjun sir will like her that day. The dori scene - his subconscious took over reality..but reality bit him hard when she wanted to shake hand with him wishing him good luck😛.