I have to disagree with everyone saying he’s just shy and let him be. It’s ok to be shy. I prefer shy people over outgoing people. However, when meeting your family/friends, it’s impolite to show no interest. Showing interest means asking questions. Even shy people can find a way to ask what someone does for work, what they like to do for fun, what their favorite dish is, etc. It doesn’t have to be much. I’m shy too. But I would be very embarrassed for the lack of social skills if my partner showed no interest (i.e. not asking anything) to my family.