Even though Ankush cheated on BB, she is on top of the world when he gets authority and ends up causing losses always. Also, she is the major reason of AB being away from Romil. I won't be surprised that BB engaged in DV herself. Afterall, Adhik may have become an abuser by watching BB.
Nowadays, Samar is Out of character. He is mean to his entire family and hasn't even spared his mother and grandfather. He has become a blind follower of Drunky. What if Drunky is indulging in DV even before Barkha 's instigation.