Don’t hate Rin. What he did was out of fear—fear of confessing his feelings for his best friend. This is actually quite common when you develop feelings for a friend—especially in their case, since they’ve practically grown up together since childhood. In Rin’s mind, it’s easier to make Sho hate him; that way, he wouldn’t have to feel guilty about loving his best friend when those feelings aren’t reciprocated.
Don’t hate Rin.
What he did was out of fear—fear of confessing his feelings for his best friend. This is actually quite common when you develop feelings for a friend—especially in their case, since they’ve practically grown up together since childhood. In Rin’s mind, it’s easier to make Sho hate him; that way, he wouldn’t have to feel guilty about loving his best friend when those feelings aren’t reciprocated.