After a while, you just can't cry anymore. You juts have to believe that what happens is what's supposed to happen and you can't change that, even if you tried. So just dry the tears and hope that tomorrow will be a better day.
It seems everyone knows the truth in their own lives but the heart always likes to fight the hardest battles. The heart always looks for reasons beyond logic and understanding, so in the end Acceptance of the truth, takes time.