That is to say, an unwritten rule that a masseur on a house-call should/must be explicitly informed if the client is not alone at home, even if the roommate is merely hanging out in a common area, and you'd pass him by along the way? And apparently said rule is so obvious and self-evident that anyone should know full well, without being told? At least, that's what the guy who came by a few short hours ago, then instantly left just a brief moment later, thought about the matter...
The thing to know about my current roommate, for background reference, is that he is extremely open-minded and non-judgmental about more pretty much all things "sex-related" in life; neither any thing I would have done with the masseur, up to and including "full service" elements, nor the fact of monetary exchange for such, would have been even remotely objectionable or at all remarkable to my roommate! When the guy arrived, my roomie was just sitting on the couch in the living room, relaxing and watching some stuff on his PC, and fully intended to pay no mind to the masseur and myself; we were free to walk out of the foyer, through the living room, right past my roommate, and onto my bedroom -- then enter my bedroom and shut the door, and enjoy our activities in privacy and solitude.
Yet the man walked inside my place, noticed my housemate more or less existing in a common area (and minding his own business), and instantly decided to nope out -- so quick and curt, not even willing to hear a word! 😕 Before I proceed, let me be clear that I fully respect his right to his personal "comfort zone" and prerogative to make decisions for himself, accordingly! However, what really "stuck in my craw" was his rather accusatory statement that I "should have" told him about the roommate being at home, as if I'd somehow done wrong or been negligent of whatever (perceived) duty he had presumed of me -- as opposed to, you know, treating as the blameless mismatch of perspectives and expectations it was...
I even went back and re-read his profile -- just in case his bio had included a stipulation about whether or not an outcall client was alone at home, or not -- but there was nothing whatsoever to that effect! Of course, anything to do with hints, implications, or "reading between the lines" is usually, for me, a recipe for failure and confusing, but whatever...?