RK left radhaji when not well,fool sadakchap

I think this statement says a lot about his psychology. The thing is, he is extremely jealous of RK. So, he actually tries to compete with him in every regard. Like, he used to give lectures to RK about being a responsible and respectable husband in front of Madhu because he wanted to show he is better than him. He wanted Madhu to know he is better than him. This is the same case here. He compared himself with RK again here. He just waits and sees for a moment where RK failed as a husband, son or just a human (according to him) and twists the facts around, so that he can prove he is better than him.

It's entirely a different matter that he failed in convincing Madhu but I think that's what he tried to do.

Bottom line is, he just wants to prove that he is better than RK. He is his replacement. More than Madhu, I think he is obsessed with RK. He wants his life. 😆