When Shivani was asked what she loved the best about Phase 2 (Vikya wasn't there in the intv) she said she loved her chemistry with Kid Atharv. She didn't digress and say oh yes, my chemistry with Ravish even though the actor was right there. Most actors would lie or be diplomatic for the co-star they're being interviewed with.
Now in the latest interview when Vikram says 'Atharv thinks Vividha loves R', Shivani goes 'paagal hai kya' and makes a face because she knows her character so well and her attachment with Vitharv is so evident that she can never ship her character with someone else!

It just makes Vitharv even more special when you know the actors are just as invested as we are.