My brother and i were like this. Close and fond of each other. I never protected him—it was the other way around so let's not go in there—like elder ones are expected to. Neither did i help him with his studies nor ever included him in sports. Moreover, he unquestionably used second hand books throughout the school years without a word. Perhaps his dislike for academics helped! Having said that, i vividly remember feeling proud of him while holding his hand on our way back home from school as well as tuition. Of course, this was long before i set out on a let's-please-others journey that made me a bona fide asshole.