From what I saw today when Vividha told Ravish about her and Atharv the first thought that came to his mind was how his mother is going to feel after learning about the truth, his exact words "agar maa ko pata laga toh". This guy is worried about his mother when his marriage to about to fall apart and I am not saying it's wrong. As far as I remember he has been pretty clear that this marriage was for his mother so why should Vividha even apologize to him ? If we go by this logic she should be apologizing to his mother no?
She shows the courtesy of saying sorry to him when she is not even at fault here, even then she gets all the gaalis and judgmental looks. Kare toh kya kare.