Don't think this will end in a love story how ever much people want it.
Jagya's life was quite complicated when he met Ganga and his feelings were equally complicated 
There is a lot of difference between Jagya Ganga story and Mannu Pooja
Jagya Gauri were very young too when they met and where did that story end?
I still believe it is just to show how boy and girl relationships at that age should be and how they can get a different hue in case of child marriage. Nothing more than that.
Just to show Pooja and Nandini Kundan and Mannu.
In fact they show Mannu and Pooja's scenes only in connection with Kundan and Nandini
I am sure Mannu Pooja friendsship will end with a message showing how teenagecrush should not be mistaken for anything else other than that.
I don't understand this eagerness to attach some importance to Mannu Pooja relationship. Why such eagerness to something more than friendship in kids who are that young???
For one thing I don't think either the mother daughter duo's role is so important in the story.They are just there to remind Anandi that she lost her child while trying to help them.If someone else was there in Anandi's place they would have taken out their frustrain anger and despair on this mother daughter duo.