On the other hand, Manav has become an obsessed man in terms of his huge ego. He forgets that he was uneducated and just a mechanic before he became this successful businessman. Someone needs to make him understand that he has lost a bit of his humility in all of this time.
He forgets that though Arjun agreed to marry Ovi in Canada and then changed his mind after meeting Purvi the boy didn't do anything wrong. In reality he actually confessed to not having any liking to marry Ovi in front of all his family. Manav has truly forgotten what real love is all about.
He fails to understand that Arjun can love someone other than his daughter Ovi.
Even the hospital scene clearly showed that Manav will never understand the love between Purvi and Arjun and he thinks it's disgusting.
He hates Arjun only on those grounds - for the simple reason that the latter found true love.
In fact, he fails to see that Sachin and Ovi committed similar more serious offenses in breaking up the marriage of Archana and Manav and Arjun and Purvi with one unsuccessful in the act while the other succeeded in doing it. Both Sachin and Ovi were brought up as selfish creatures with no thought for others just like his mother Savita who did not even care about his own happiness just as much as Ovi and Sachin never cared about Manav or Archana's happiness either.