Gracey, you need to get the focus off of him and onto yourself. I don't know if you attend meetings or are in counseling but you're right, you are obsessed with him and you need to deal with the issues that have caused you to be overly attached to him. I've been where you are so I understand the helpless feelings and not being able to do things or think about anything but him. It's time to start taking care of yourself and your emotional well-being. You can change but sometimes we can't change ourselves by ourselves.
Hugs,
JG