Boyfriend issues

So my boyfriend and I live together we are both 18 I’m finished high school and he isn’t yet he has a couple of credits left but he doesn’t go he sits here stays up all night doesn’t brush his teeth and has a constant attitude like he has no worries I’ve been taking care of him financially since we started dating basically.. I’ve just been so mad lately at all those things and idk how to express it so literally any little thing he does I have a problem with it then he gets mad idek what to do