My first reaction when i saw the race and Verstappen did not give back that position to his team mate Perez even though he desperately needed that points was also that Verstappen is such selfish and arrogant idiot. Then i read about that rumors that Perez crashed intentionally in the qualifying in Monaco in order to prevent Verstappen and other drivers to place in front of him. That back then happened when the championship was still completely open so if this is true then this really was a very dirty and damaging move from Perez and i can understand Verstappen if he still does not want to help Perez after this.
I guess Perez will have to leave Red Bull after this season.