Whats the WORST part of breaking up?

When you still love them so much and have to deal with being alone everyday now and still holding them close in your heart even though theyre gone and still having to feel the pain of knowing it will never be the same and that its impossible to fix anything anymore and then still knowing that they are most likely happy without you there anyway as you spend every night crying yourself to sleep or distracting yourself from reality that is sad and even then still being afraid of being so alone forever but also knowing deep inside that you want them and no one else but the reality is that they wont ever be back and you have to deal with the empty feeling of what once was and getting more emotional because you wonder if the love was real to them how could they be fine and then still putting on a fake personality and smile everywhere you go because you know no one can fix your emotional problem and no one would really understand and you know youre tired of generic advice and you go home everyday thinking how happier it would be if they were there to welcome you back home and grow tired of it all and just dont know what to do anymore but continue dragging yourself telling yourself you dont need them to be happy yet deep inside you know you really do even a bit and then still pondering each day where you went wrong and why did it all go wrong and then forever being haunted knowing none of this ever matters anymore because none of it will ever be back and the happiness is gone forever and crying more but realizing you shouldnt cry to give up but you should cry to keep going and then one day just moving on but then it never truly goes away or erases.

oops, autocorrect. I meant moving on

Depends, if you didn't care for the person, then the worst part is that it simply happened. If you did care for them, then the worst part is that you did care for them, and that you may still feel that despite the situation and knowing that you have to move on.