Personally, I think it is high time that Ira and Meenu gave saanchi a lecture on the concept of 'self-respect'.
It was okay for shiv and ira to ask J whether or not he was happy with the rishta, but I feel that one key conversation that should have happened is that saanchi herself should have asked J if he is happy with the rishta.
And in this case, there was not much more need to ask, because it should have been obvious to her that his talks with her were just couched in extreme formality and he didn't even show the slightest inclination to even be friendly with her. He never initiated any conversation with her, and whenever she did call him then he cut it off with one line sentences.
If after all this, and then his breaking off the rishta, saanchi still says she wants to go ahead then she deserves whatever she is going to get.