Samar isn't in Vanraj's team not just because he's Anupamaa's laadla. IIRC Anu has spoilt all her kids rotten equally. It's rather because even before the affair came to light, Vanraj was straightup abusive towards Samar. Not only did Samar always see his father treating his sweet mother like a slave, Samar himself was Vanraj's punching bag. There was no love lost between them, which was entirely Vanraj's fault.
The show set it up pretty clearly to begin with. But aren't addressing it anymore. It has come down to Samar merely being angry at Vanraj for adultery. All the abusive he faced has been reduced to one passing 'loser' comment. Someone remind the writers how much there is to explore in that storyline!
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