Speaking from personal experiences of being in an abusive relatioship, I understand how you feel scared, confused, and in loved.
One day after two years of being with this guy, he choked me and literally chased me around the house with a knife, it was to the point I thought he was going to kill me for real. By the grace of God, I stop trying to fight him and he calmed down sort of, he trashed my living room and then left. Did I call the cops? No becase I was afraid of him. Did I let him back into my life? Yes because I at the time could not imagine life without him. I also thought it was my fault for the incident.
It took me over a year to get this person out of my life but I did it and so can you. God does not want you to be with someone that hurts you. This isn't love.
I understand if you can't leave him today but you can start today. Start thinking about yourself more and stop talking/thinking about him. Try it for an hour and then try it for a half day, then a day, then a week and so forth. Seek help from professionals, church, and family. I would consider filling a police report or going to the hospital so the abuse is documented which is needed for a restraining order. Write down every good and bad thing that this man has done or has said and imagine if you have a daughter would you want your daughter date a guy like this if no he is no good. Read the Goddess sticky everytime you come to this site.
You ARE beautiful and worthy of love. You CAN live a beautiful life without him. IT IS NOT YOUR FAULT. If you stop doing something because of him, slowly start again. You ARE NOT ugly, stupid, or whatever he said.
Good luck and I will be praying for you.