So Prakash is completely wrong. He has patched up with a friend who completely destroyed him and his family mainly Yogi who took so much time to recover. Pari had been there with Yogi through ALL of this and to even listen to Pari's parents even though they humilated him and family. He talks about not knowing if Pari will turn of them, but how can he be so certain Shiv won't do it AGAIN!
I hate how he talks about seeing Shiv broken, but then I think you also saw your own family broken. How does the pain of shiv outweigh the pain of his family especially when he recieved the major blow. Kusum told him, it was Shiv who broke the bond and he still he is this adamant on helping a man who betrayed him and ruined his reputation. Talking about reputation, it was Pari who for the sake of this family, his family she agreed to sit the proposal. She ensured this family would celebrate Diwali as they almost didn't because the money was used Yogi's wedding, so the rich folks can feel welcome. Pari stayed with the family through dark times even when she repeatedly told to stay out of the family matters. He talks about Yogi-Pari not lasting long yet he hasn't seen the love between them and he thinks a second marriage with Gunjan will last, who broke his heart repeatedly. He said, "Pari won't be able to adjust within Yogi's life." Yet she learnt a whole new language for his sake out of love for him, she'd do anything for him but never will she hurt and break him like Gunjan did. Remember she was the first person to witness Yogi's pain and she hardly knew Yogi as much compared to his family who couldn't see behind his smile. She knows him better then most of them including himself. He better apologise and respect Pari, after she has done and for who she is. She severed all ties with her parents for Yogi and Prakash can't even see where his Yogi's heart lies.
Prakash spoke about how can they think the way Shiv did (Shiv's mentality), so mind the fact Prakash knows Shiv wasn't right. Anyway there is a huge difference in what Shiv did and what they are proposing (to break the promise). Back then, YoGun was in love and had a painful impact but know the only person who will truly be hurt is Prakash and possibly Shiv yet even a man as bad as Shiv knows the circumstamces have changed. On the same line, Prakash has Shiv's mentality by forcing Yogi to be with Gunjan, thats what Shiv did with Gunjan. Regardless of a good intention, hurting those around in the name of good makes you sick, willing to hurt people for bit of good.
Prakash has honestly become delusional and irrational. He see right as wrong and vive versa. Just to play hero, he ended up breaking apart his family. With Kusum just merely doing her duty as wife, his two elder sons against him including their wives, his father can't bear to look at his face and Yogi not even able to dictate his own life.