rk would have reacted differently if that dude was not involve. more then madhu hurting him, he is hurt that their love story is shared to a man who he hates the most, the man who is lusting over his biwi and she went to share their story to him. like he said their love story is not open book that can be shown to the world or can be read. their love story is something that can only be understood by them and is only between them. a beautiful yet painful love story which cannot be shown to the world b/c they will never understand it.
then came all the incident that happened and what shocked him the most was when she said even her falling was part of her plan. i mean she could have died if he didn't hold her in the right time and this has shaken rk to core that to take revenge from him she could stoop to that level. he is feeling like a fool that in his entire life this is the first time he couldn't see through someone lies nor fake. the best part for me was when rk said he could not be like her, but she has become like him which he never wanted, NOPE! Never ever. this is another point that has hit him hard. all together he is in pain alot of pain and he is happy that her plan has worked and she became victory now. what he did to her, she return it there is nothing more to say or do. there is no doubt about his love for madhu, he loves her alot and it is matter of sometime he will forgive her b/c his love for her is greater then his anger. this is why never let a third person come between you and your spouses or else things can get bad to worse like it did now. think before doing something b/c once you do it there is no return. in my eyes rk is not wrong, he is angry and hurt which will be healed soon.