Dev didn’t even let Natasha touch his hand in episode 75 (I think) when he realized he had fallen for Sonakshi. Natasha tried to keep her hand on his to pacify him, but he pulled it back the second she touched him.
Anyone who has seen season 1/2 knows how Dev is as a husband. Devoting, almost obsessed with Sonakshi (al tough sometimes confused as seen struggling with his emotions because of his incapability to handle them maturely sometimes).
Season 1 Dev would NEVER give his employees a red rose or get over friendly with any employee. I mean, Tina would literally buy his clothes, handle his angry clients and Dev would literally just say a thank you.
Even in season 2 when he played Casanova, he maintained distance with that girl in the hotel post leap. He didn’t think twice to send her out of the room midnight.
All characters have fallen prey to the lousy writers who see KRPKAB as a brand to make money. NONE of the characters are in sync with the previous season. Elena would NEVER shrug off Sonakshi like she did, neither would she barely say anything; she was often the loudest in the room.