After seeing yesterdays' episode, even I have those doubts. May be Gaythriji will be too sick and would like to have her son & grand childredn with her. and during that precise minute SP might put his condition of "either Gayathri or Arti" to Yash. Even others might also put pressure on Yaah. On the other side there could some pressure built uop from Dubeys with regard to 3rd BMT donation issue and either yash or Arti might succumb to it and the other will be crossed for same reason.
Yash might not be able to take the pressure from boththe sides might accept his father's condition (May be Yash & family might face financial crunch as Yash works for his family business, he might not be allowed work there any more)
May be Bua also influence Arti by tauntig which might result in Arti does or say something (intentionally to enrage Yash and take the descition to go back to his family.
For I feel, Arti mught take up a job and stay on her own but even Ansh might not be there with her. Fubey's might grab him from Arti with their regular rona-dona, cussum etc.
Jaya