Anasuyaji agree with your POV on nimrit has no proof yet that Agam still deeply loves her..All she has witnessed till date is Agam caring and "fake" love more for Amrit.so yes thats why she got all the negative thought about the bangles and Agam was genuine when he said its my wife bangles...nimrit thought its Amrit one as she is Agam wife now..As a viewer we do know only Nimrit is Agam's wife from heart and soul..
Coming to Agam must say he has a great level of patience to keep this mask on his face..inside he is killing himself so much pain he has in his heart.missing the one he loves the most and next to be with her killer ..
Agam has hid this with his loved ones..mother and Tej of why he married Amrit out of the blue..his own and he is keeping this secret just to get his revenge though he has lost respect of his MIL..Tej..
Its understandable Agam wont reveal it to Natasha who is just a business partner for him..he is nearing his goal and wont do a wrong step to ruin everything..
AS you said its a serial and creatives will keep on hold this reunion of Agni..they know its a great USP and getting viewers attention..it will happen but after lots of drama..so lets wait and watch and keep patience..😊