Hatred (or in this case, seeming cruelty, in the guise of anger, cutting remarks...) is not the opposite of love, apathy is. Just the fact that she's paying enough attention to him proves that she cares. As well as some of the other posts, stating that being truthful, though seemingly cruel in the short-term, for one's own good is proof of love. And "you always hurt the one you love".
I'd say those three points wrapped together go a long way to explaining the meaning of CTBK, to me.
Hatred (or in this case, seeming cruelty, in the guise of anger, cutting remarks...) is not the opposite of love, apathy is. Just the fact that she's paying enough attention to him proves that she cares. As well as some of the other posts, stating that being truthful, though seemingly cruel in the short-term, for one's own good is proof of love. And "you always hurt the one you love".
I'd say those three points wrapped together go a long way to explaining the meaning of CTBK, to me.