What am I doing?

There comes a time when your heart is so broken everything reflects your pain. I don't understand how someone can have so much control over the way you eat, sleep, breathe, behave and dream. This person has brought nothing to my life but heartache and pain and completely drained me of me. I know longer know who I am and I am more drained then I was when I started. I thought he was the one and yet here I am ALONE once again! And yet I cave in, why just to remind you something you haven't forgotten? For my pleasure, or for the sake of knowing Im still bound to its control? The pain is sometimes unbearable and I no longer want to carry-on but you aren't worth it! So why cant I let go and move on with this life that has so been patiently waiting for me. What is wrong with me? I need a fucking intervention?