Both of the main characters are ignorant of the others feelings nor do they actively pursue the other, college aged young adults who would be just bashful being alone in the room with the other. The series feels like it's two buddies hanging out although one is of the opposite sex and that the fact they are is almost as if it's an afterthought but where all of the comedy comes from.
Not terribly frustrating as other series as there is the general feeling that there is on some level progression of some sort.