<human>: Could you distill the essence of the text into 1-3 sentences?

Me and by ex broke up a little over a month ago, but have only been doing NC for about a week. We broke up because of circumstances we couldn't really do anything about (differences in basic values about life and how to raise kids etc.), and we both still have feelings for each other. However I'm pretty certain I was the one who was the most involved in the relationship, and as much as it hurts to think I probably loved him more than he loved me towards the end. 

This breakup has completely broken me as he was my world for 5 years. The past month and the month leading up to the break I have been a shadow of myself. Throughout the years I have been really naive thinking we could work things out although there have been major warning signs all along. 

He is now out of my life, but I just cannot get him out of my mind.
My problem now is that I cannot stop obsessing over what he's doing, and more importantly what he is thinking/feeling. Questions like "Does he think about this all the time like me?" "Does he miss me?" "Is he feeling anything at all?" "Is he over me already?" "Is he struggling not to contact me?" "Is he considering trying to get back together?" is CONSTANTLY running through my mind. It is completely unproductive and getting me nowhere when I really need to be thinking about myself and getting back on my feet. Even when I try to keep occupied with other stuff these thoughts are constantly there. 
I feel like even though we broke up my mind is not allowing me to let him go. 

How do I stop obsessing over him? Even though I know there is no way back and I'm completely drained and exhausted from this experience, I just cannot give up on him/us.
<bot>: Cannot stop obsessing over ex bf's feelings and thoughts about me, need help to let go and start focusing on myself.