In reality, we see he decides to fulfill his younger brother's love if he cannot fulfill his own. Self sacrifice. So we see, even though the devil within him whispers to him, he has control over himself. He forces himself to remain calm and does not show his dark side to anyone. It would spoil his "dharmatma" image.
But my question is for how long ? For how long can ranvir keep playing the Mr good guy...who puts his bro's happiness ahead of his own. Will he eventually crack?
Recently we had seen a dark ranvir in anchal's dream in mauritius where he tries to drown her...
I wonder if we will ever get to see "that" ranvir in reality...not in someone's dream or imagination.