Bihaan a family minded person is right...then Thapki is family too why ignore her ...though he cares and still protects her...
Yes in one point it's easy to believe that Bihaan is hurt and pissed off at PN people. ..but if that was so then why stay at PN even when his so called birth mother asked him to come with them...
Agreed that it is his home okay but then he should have taken the home from them and went with Kosi coz that was what she wanted...
Why didn't he torcher PN people just like his mother had started to do...
All the more he accepted a stepmother but is not able to call his own mother 'Maa'
Why bear the so called cheat family when he can easily throw them off , even if Thapki objected... After all they killed his father , we saw how he was ready to kill the 7no. Chappal wala for his stepfather where did that fire go...
Nd if he has no relation with PN people then why call himself 'Bihaan ' when that name was given by PN people...