Raman was already feeling bad because of what Mani said, because of what Adi did,because of what Permeet and Ashok and others did with Ishita ,because of all the troubles she bears for him and he cannot give her a happy life and now Shagun's remark about marriage expenses.All this when he and Ishita have discovered each others feelings but not getting an opportunity to express those feelings.It is really too much for him.He needs a break. He can't get a break from his duties,office,family but he can distance himself from Ishita.. In the mood that he is in this is a logical thought.Unfortunately despite Ishita being much more sensitised to Raman it would be still impossible for her to imagine the extent of his guilt and how much it is affecting him. Poor Raman is really alone and his wife is doing her best to cheer him. Like a sweetie bird she goes on tweet tweet while he drives the car and tries he to put on a normal look. At any other time he would have dropped her off at the nearest riksha stand.but things are different now.I have only one thing to say to this intelligent,shrewd and sensitive man he should have put his foot down and allowed attendance at Shagun's marriage by his family limited to the minimum.But he didn't because Ishita said Shagun must have her daughter at the marriage Because Ishita said Mihir's and Shagun's relation should not be spoilt, Why did Raman not put his foot down .Ishita may be very clever and good but surely Raman knows his ex wife better and her knack of creating situations and why should he believe that she has changed and wants to make it upto ishita .That was just a temporary shift in mood bec Ishita didn't take action against Adi despite his bad behaviour. I think Raman has only himself to blame. Separating from Isita will assuage his guilt that Ishita does not have to bear the brunt of his "past baggage"But then what about Ruhi and Ishta's life -/Ishita is a married woman.