i think i am feeling some thing by some weird kind of sources like sixth sense or experience of watching bala ji series
that arjun is not the real son of singhania family
u see how her mother reacted .she was sooo cold to her and on the other hand showing great affection to his looser son
and yeah his father aslo said that he has some secret hisaaab kind of thing with aaloowalia,s
i think that is realted with arjun,s past tooo
i think so guys yet i am 99 percent sure that arjun is not related to singhania family by blood i dont know
what u say?