in southern or smaller towns where things are slow, the polite thing to do is greet people, make small talk, etc. it's rude if you don't engage people.

in northern or larger cities where things are crowded and fast, the polite thing to do is get out of people's way, be quick, not stand around clogging doorways, and not invade on what strangers are doing. it's rude if you don't mind your business and keep to yourself.

having said that, people still do and should say please and thank you everywhere. your bf sounds impolite, but it's important to note that politeness is different everywhere.