The Cvs and the directors have slightly changed the storyline track.. just to synchronize with the valentine day which is round the corner. Arnav is flirting with Khushi.. he knows he cannot stay without her.. but he won't let her know of his true feelings towards her.
before the final realisation.. shyam will be exposed.. and it is the misunderstanding that will bring them together.. it is the hate that unites them and not love.
so meaning.. iss pyar ko kya naam doon.
Arnav will hate her because she did not confide him.. when he came very close to her, so he will hate her..
whist.. khushi wil fall in love with him.. she has infact fallen for him, but she did not realize until the shyam's exposure.
850