I wont say ArVi scenes just had chemistry, I will say ArVi had, has and will always have a certain magic, charm and enchanting aura that made us love them.
Chemistry can be created with some close dance and intimate scene but its difficult to send the audience in a trance with their magical scenes.
Onir-Purvi can have close dance and maybe create chemistry but magic; that can never be attained by them.
Arjun-Purvi they can send shivers down our spines even when they look at each other from far, they can make people love them, they can make people believe in love.
Rithvik and Asha has the personality to attract audience with their awesome acting.
But now i fail to see the spark in Rithvik and Asha, they are just acting not feeling or living the character anymore.
You watch their flashback scenes and can see the old Rithvik/Asha back, but you see them with other people its just acting.
PS: Its strictly my opinion which is not going to change. So if you agree only then quote me or reply to my post. But if you disagree then do not bother to quote me.