Maybe he just does not like you. would you always say hello to someone you dont like
maybe he is not saying hello, not because he thinks its immoral or its giving u signals. maybe he simply does not like you and would rather not deal with you .
why extrapolate this on the entire muslim men, I mean with a billion muslims, one would say roughly half are male, and if we take out even 30% of that population as kids, that is a rather large number to be whining about isn’t it?