I think parts of today's episode showed how relationship between Shubham and Swarna / Karthik hands progressed.
He didn't seem to have the usual annoyance or irritation he has when he sees the two. In fact when passing on the Aarti to Karthik there was somewhat a polite smile. I also thought I saw some softens in his eyes when Suvarna spoke for him asking Naira not to tell anyone. Like he felt kind of good that she understood it was somewhere her (Suvarna's) mistake that led to this or maybe it was that she put in a word for him.