Well, we are not going by the pictures we show you- but by the sources we have on the sets of Yeh Hai Mohabbatein. Divyanka Tripathi cannot stand Karan Patel. So while she may have shot a dance number with him recently, we know for a fact that she was cringing during the entire sequence.
And mind you, she experiences the same feeling for him even otherwise. The man is in high spirits on the set and puffing away non-stop. And then, you don't like someone even without a reason don't you?
So it's a combination of factors for the the young lady. And we wouldn't like to be in her shoes, would you?