A lot has been said about Yash's behavior which I do think has been rude and unfair towards Aarti and treating her badly time and again in front of the entire family.
In light of all this, I think it is HIGH HIGH time for Arpita to leave the storyline. Please do not misunderstand me. I'm not being harsh here. I personally believe that one should celebrate life and not death. Yes, Yash has gone through a lot and its hard for him to forget Arpita. But, even Arpita wouldn't have wanted to see yash in this miserable situation for the rest of his life.
Not only Yash's bedroom in Bhopal but even their Mumbai outhouse was filled with Arpita's pictures. It was as if there is an exhibition of Arpita's pics. Isn't the outhouse supposed to belong to the family and not just Yash? Regardless, it is for Yash's own benefit that Arpita leaves the storyline.
Finally, I'll reserve my comments for Yash's behavior towards Aarti. I agree with most members who've provided a really good perspective and analysis of his behavior.