yes that was it was when shivam was brought into the show but if u follow the june-july episodes it was constantly rey who was standing like a block to hurting swayam/sharon and taani. so shivam bei ng the clever guy he is shifted focus from swayam to rey.
by then it isnt limited to sharon slapped me- its also, the gang has insulted me so much+im going to get bac at ALL of them for soemthing or the other. HURT REY and U HURT ALL.
so he tried using taani and like u said it didnt affect swayam much but bonus for him- it affetced rey! so he continued trying to use her. as he now cant do that bcoz taani knows his real side, hes going to try and make life miserable for them by making sure they lose what they like best- more than friends and bf and gf s - DANCE.
he s just the ind of a person who cant see ppl happy