Here is my persepective as i am trying to analyze from all persepctive.
1. Manjari adopted neil ideally he would have lost in crowd but she still chose to bring him home when she knows he is her husband's kid. That needs guts. As its really difficult to have that kid and also give whole love to him without expecting anything in return. What would have happend if manjari would have told harsh that neil is his son. Harsh would have kidnapped him as he cares more about reputation than his kid. That's how its been potrayed till now. Harsh wanted abhi to marry arohi for hospital. He would have made neil study mbbs and pulled him also into his mess.
Manjari is wrong but looking at harsh not completely wrong.
2. Abhi: He knows how harsh taunts her abuses her. But she still got a kid into home even listened more than usual. Tolerated everything without any complaint. Gave him a best life he could have asked for considering his life in orphanage vs birla mansion. She never tried putting neil down and if abhi would have known neil is harsh's son they would have ended up like arohi and akshu where neil would Hve competed against abhi to gain harsh's praises.
3. Neil is right too. He deserved to know about the only one blood relation he had. He sacrificed so many things considering that he should not burden his foster family. He even heard so many things from harsh which he could have answered back. But i am failed to understand why neil is over concerned about his so called father who did nothing for him and even nor have any plans as well. He even think 100 times to tell world tht neil is his son.
4. Harsh is wrong in all aspects.