Could not do anything about Gaurav
Brahma wanted to erase the stigma called Gaurav by finishing him off if he cant make him straight. Now Brahma has to travel to Canada or US to do that but as a wanted criminal, he cannot travel on tourist visa obviously. For the moment he will forget that chapter.
Previously also he used Aditya as a pawn to imbibe fear in Priya and fall in line. He maybe thinking like this. If he cant have Aditya, then none can have him. Brahma is in such a state, where he will not think that clearly. Already he was a psycho sort of person. Now he will show them to what depths he can go as he has nothing to lose and others have everything to lose.
I am thinking about the smiling loving Brahma during his earlier days with Devyani (very brief period?) How he turned into a monster? Is it because of the police job which gives immense powers? Is it because of loose women available easily? Is it because his father did not take active interest to correct him in time? The personality change was rather drastic.
There were soft moments when he comforted Devyani when Gaurav was missing. Adi's appearances made him to become Dr.Jekyll for a while.
Uttara's constant presence and Gaurav's secret were trigger points more than Priya's little encounter with him.