I KNOW EXACTLY HOW YOU FEEL. TRUST ME. Every part of your life is centered on him. You do things that are actually supposed to be for your own good, but deep down inside, you search within and find that, you're doing it for that special someone who used to be in your life. That someone who was the cause of your own self-improvement, and without that anchor, somehow you've lost your way in life. Trying to compare yourself to his next lover. All that is normal! It is a part of moving on, and it's good you are experiencing and allowing yourself to feel the pain, and to go through it.

I went through this for more than a year. It was NOT good. At all. But eventually it gets easier. Like one of the above posters said, i do not know how long your relationship has been with him, but logically, the longer your relationship was, the more time it takes for you to get over him. Your brain automatically replays all of the happy memories, and naturally you will miss them. For me, I kept on replaying scenarios, conversations, actions, little things that I missed. I wanted to lose my life, I had no passion for anything at all, I just kept on questioning the point in life. This was going on for a year, you understand, among important school work and massive exams, psychological problems with moving on, the works.

Until, one day, I snapped. I got tired of all this craziness. Maybe one day, you will get angry, and perhaps it can be a little healthy for both of us. To pull us out, to get us out of this abyss, and that would be the second step to moving on after going through the first stage of pain. I PROMISE YOU, YOU WILL GET BETTER. I still am experiencing what you are experiencing, crying, and all that depression. Please, PM me if you want.

P.S i hope my reply was on the spot and was useful. I'd feel really, really stupid if it was not related to your problem at all.