SuperNovice has it right....Look at WHO you have in your life. We have all had something of this sort happen to us....they most likely were never a true friend or lover to begin with. It is unfortunate that we delude ourselves into seeing what we want to see. Be angry, be sad, go thru all the stages of grief and move on.
congratulations. you are one step closer to hitting rock bottom.
i do feel your pain though yours is far greater than mine. *hug* breaking up especially the way you had to shouldn't have to happen to anyone. i've lost a couple best friends myself. good luck to you dear. things will get better...as stupid as it sounds right now.