Anuj's whole purpose in life is to "get" Anupamaa.
The "thing" Anupamaa, doesn't matter how it goes on a human level. Ever since he fell for her in college, he has been telling everyone about her, as Devika said the whole college knew except her. It was a big issue back then and could have ruined her reputation, but why does he care.
He kept stalking her post marriage when she was clearly smitten by and in love with Vanraj. It was told that she was very happy to see him and Bhavesh used words like Vinod Khanna jaisa ladka for him. He was even stalking her during and after her 3 pregnancies, and when he was not, he had set out people to track her.
Everyone in his home as well was aware and reminded numerous times that he can only be with Anupamaa, inspite of him having one night stands and casual relationships.
Once he got the chance, his goal became to GET Anupamaa, not help her but GET her. A true lover would have direct her into a self-improvement journey and reprimanded her of her mistakes. But all he did was leave scraps of his richness to lure her in which she did because she had greedy mouths to stuff back home.
Over here as well, he either kept coaxing her with Anu kabhi galat nahi ho sakti or finding feeble bonds to materialize his own family with her, by bringing in long lost relatives or getting a daughter so that his Anu sees him as a true family but never dared to questions her strongly because she will leave him again.
He used all the resources of his foster family to help those Anupamaa liked and punish those she hated, irrespective of their moral high ground.
As I said, his goal was to get her and keep her at all costs.
Now Adhya is no longer the reason Anupamaa will come back to him, instead she is the reason they will be apart.
She is no longer sick or vulnerable or gullible and has her preferences set in stone. She is no longer the toy that he can use to allude to Anupamaa that the Kapadia family of 3 is a real family Anupamaa should come back to. So Adhya will be scolded, guilt tripped, emotionally blackmailed to agree to what he wants in return for the 8 years he gave her.
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