One thing you always liked about Constantine's behaviour when working, was the need to maintain eye contact with whoever he was talking to. It is well said that the eyes are the window to the soul and being his apprentice (eliminating most of the hybrids that intervene in the balance of the world, Los Angeles being "his zone") you saw very often in a discreet way what was behind those eyes of his.

It was night, the two of you were now arguing about some case you were solving and Constantine no longer wanted you involved. At some point the conversation began to heat up, and John was now occupying that intense gaze with you, not taking his eyes off you, his face stoic but with eyes showing a glint that appeared whenever he dealt with demons or angels.

"I said you will not continue in this case" Constantine speaks, his brow slightly furrowed. "And I'm not asking you, I'm ordering you as your instructor, Professor or that thing"