Why do I feel Pooja is Naren Sippy's illegitimate daughter!!
There have been hints to this fact that Naren is not the perfect man he's shown to be.. he had some relationship elsewhere. It's also hinted that Rohit knows about it.
Also someone pointed out someday of the reaction YK gave after Naren came to assure Nishi after wardrobe malfunction fiasco.
So I really feel it's something related to Naren..