Has he stopped loving me?

My boyfriend and I have been together for a few years. He always shouts at me. He called me a deadbeat once. We fight constantly. He never wants to have with me. He has stopped telling me I am beautiful. He has become a silent, selfish, nasty person and I have had it. I have given up many things to be with him and still he isn't thankful. What have I done wrong? Has he stopped loving me?