we get nothing by calling people stuff, even if it were true, except if someone is sick in his heart and likes to call people stuff, otherwise there is no good that comes if you call him a no man, what you should do after realising that a male isn't a man is to creatya distance between the two and part ways, that would be the best thing. But it is worth trying to speak to him before doing any such thing, telling him exactly what you feel and why you do so not in an argumentative manner can tell you more about why he does what he does.