Grief and love intertwined? Yes that's true. But I guess there's one more thing that Matters. That is, Effort. What is there to grief and love about when one can't hold onto love or friendship completely, truly, honestly and purely? When they expect love from someone, When they themselves lack in effort. Lack in understanding the words of others. Without genuine effort, love can wither and die. Empty words and promises, devoid of action, can lead to disappointment, resentment, and ultimately, grief. 

Feeling grief but at what cost? 

One must feel grief in depth. To know what is to feel, to become someone when one's in grief. And yet again, when there's no love there's no grief.

So, a human must know Love. And feel it. Without fear of falling apart or regretting afterwards. 

Love is pure, lust isn't.