Perhaps there is nothing more horrible than loving someone and then hating them. If you feel love for someone and then you end up hating them, what sort of infamous love is that? What assurances are there about the love you now feel towards someone with whom all is well at the moment? The same person you now love will most likely become the person you hate in the future.
Stop being resentlful towards people you loved, stop accusing them of this and that. By continuing to do so you will only show that your love has been false and that it cannot help but continue to be so in the future.
Yet even more horrible is to pretend to love someone that you hate, just to make a good impression, and show that you are evolved. In this case it is much more honourable to hate.