I agree Supriya, They got separated because of some misunderstandings and somehow, because of Avantika because she was not able to cope up with a middle-class life or Harish not being with her on some important occasions of their life. But this week, they have show that How much they love each other still.
Avantika watching his Comedy Show and smiling and analyzing it with their old times showed that She is still the old Avantika who has fallen in love with Harish but she keep on remembering herself that she doesn't belong with Harish. It shows that she loves him but something in her is stopping her from going back to him.
Harish loves Avantika, it can be guessed from the start of this show, but the differences are much more at this time, They needed to be sorted out. When Pankhuri asked Aditya to try and get them closer, He seems to be very positive about the whole issue. I think, he himself wants his parents to be together and living happily and now, I am sure he will try from his side. It's always said It's never too late.