I think Aryan is aware of his strong feelings for Imlie and is just tamping them down and hiding them and choosing not to act on them.
I also thought it was either the jija or as someone mentioned - his text deletion.
Also makers may have brought him in as negative - seeing fan response maybe they are playing it safe and not making him negative yet and are still deciding how to go further
Someone posted on IF today he said in IV his character is negative. 🙄 how would he know even makers don’t know, it’s like they are fly8ng by the seat of their pants with their script writing😆.
Who cares! None of the characters other than Meeti, Beautiful, Rupi and Nishant have been positive characters all along.
if Ts had accepted Imli at table thod shaadi Kalini wouldn’t have had the time to plot and plan to ruin Adi Imli marriage.