I think Paras, Sana, Shefali J and Himanshi are the main culprits of why these two cannot be friends. Paras, Shefali, Himanshi and Sana are definitely smart enough to realize that if Sid and Asim remained friends and stayed close nothing would stop them from being the top 2 and stealing all the limelight. They needed to break that bond to create a different angle and make themselves relevant.
Edit to add: and now Rashami is another one adding fuel to the fire.
I beg to differ. When Asim was with Shukla,he was being called his chela time and again. Shukla was behaving like a leader in that group. Lol You are talking about top 2, I can bet if Asim had stayed with Shukla he would have been evicted very soon