He didn't need to say much, trusting that his boss knew what he wanted to express.
No matter how real the act was, it's still just an act. Even with top-notch acting skills, there's always a moment when a flaw is revealed. Besides, this time, the boss didn't completely cover all bases.
To divert "M's" attention to Miss Robinson, "M" must be led to believe that the boss's relationship with Miss Quentin has broken down. However, for so long, all the boss has done is make Miss Quentin fade from public view.
The boss arranged for bodyguards to protect Miss Quentin and made her move to a villa in the suburbs, merely aiming to hide her whereabouts...
Even though no one can trace Miss Quentin's whereabouts at this moment, to "M", the inability to trace Rebecca Quentin's movements and the boss's overt care for Miss Robinson, any person with a bit of intelligence could see that these "facts" do not fully signify that the boss has abandoned Miss Quentin in favor of Miss Robinson.
