Meri beti the voice of sanity and reason! True what you say in your summary Alot of unanswered questions therefore reasons for brotherly need to protect whether out of love or duty is all still an unknown quantity.Phew Annie, I am 8 pages too late and haven't read all the responses but if you are referring to the issues as they pertain to the show, (esp because on the forum we can primarily only talk about the show!!), if we leave aside the weak and at times absurd and barely plausible characterisation and inconsistent and sloppy story telling, there is a lot that is unknown to us.
We know that both Anjali and Arnav were orphaned at a vulnerable age and the way this happened seems to be shrouded in some mystery. Also it seems they endured severe hardship at the hands of relatives being thrown out on to the street when they were children. I also seem to think based on flash backs, that Anjali was going to be married before and that is in some way related to their parents demise. It is likely that this bro and sis became so entwined and enmeshed as a result, to such an extent that they are struggling to disentangle now . Arnav, doesnt seem to have cared for anyone apart from his di until now.As far as love (I assume you mean romantic love) is concerned, Arnav has been immensely attracted to Khushi yes but he is only just falling in love and he is caught between the devil and the deep blue sea!! He is yet to make his choice really, at least that is what I feel. People do indeed have this dilemma in real life too and I have no answer really, I dont think there is a right answer to this question. seen people make either choice, duty or love, some are happy, some are not. So I dont know.😃And of course everything is blown out of proportion in reel life, poetic licence or should I say dramatic license!! Inspite of that, your question is most interesting and pertinent, rather more than our usual preoccupation with Barun's long and greasy hair or his(lack of) muscles!!😃