Hey i think lallu is really gone so mad that he didn't even realize what he is doing.....
He is the one who doesn't understand his son
He is the one who wants his son to accept what ever girl he says to marry...
He is the one who throwed him out the house.....
He is the one who can't digest the fact that heer holds a good part in his sons life....
He is the one one who understand that his son asks him to accept him with his love not him alone.....
So why does he asks his son from heer. he should be knowing by now that prem's love is the only thing that the poor girl has... but spoiling that too... i don't know how balraj mann considered such a ill hearted person as his friend and asked nihaal to tell laallu to take care of his daughter....