Shweta Tiwari and Cezanne Khan might go down in the history of TV as one of the most romantic couples, but in real life, they could not stand each other. The Kasauti Zindagi Kay pair were reportedly dating each other at one point of time, but the affair lasted only for a short while, and on a bitter note. So much so that Shweta and Cezanne took their personal differences to the sets reportedly, and were a nightmare for the show makers, who faced delays and cancellation of shoots because of the warring duo.Sources from the sets reported that they would fight like cats and dogs and sometimes shootings had to be cancelled because of them. They would ignore each other on the sets and would not look at each other. They left no chance to taunt each other and made fun of the other in front of their friends.