A very sad piece from you here with a good flow to it. Sometimes we never know what we have until it is gone. A well worn phrase maybe, but still, very true. And when we know what it was that they needed, it is too late to do anything about it...
Well done and all the very best,
Ben
Is it possible to draw someone into another's people's heart?
Is love then not forever?
Those are the questions that came to mind when I read your poem. This poem has a tone of sadness and with due reason. The feeling of regret is evident.