You just cannot blame one character. Either blame all OR blame none.
Whether its Kabir, Piya, Jeh, Abhay all has done wrong some or the other time. No one is saint here. No one is full perfect. So its better we stop the blaming business.
I love Kabir more than piya being a KaPi fan. I have the audacity to mention I am more of a Kabir fan than piya fan. But you know what? I feel both were wrong. Piya was wrong by accepting his proposal without loving him and Kabir was wrong by NOT trusting her. So that's why their relationship never worked. Both lied. :)
If you analyze one year of Pkyek you will find every character wrong at some or the other time. Being a total Kabir fan, I cannot become blind and say he never committed a mistake. Though I shall and should say he was at fault. Likewise, other characters also got wrong at some point of time.
I respect your opinion btw. :)