time to say goodbye

Tonight was the final blow for me. I'm so sad and hurt but ill get over this and find happiness one day. I tried talking to him and all he did was yell and turn his back to me. I still want to understand why he doesn't act like he loves me anymore or why he stopped loving me and why he treats me this way. I don't think I will ever get the answers I am needing. i have to see things this way. things are this way in our relationship, is this something i can live with, i dont see any changes or willingness to change from him. its all unfulfilled words, that always ends in broken words and promises. I want to be with him but not as we are now. He's making us as a couple miserable. I can't live this way. As much as I do not want to face it, we are over. What else can I do? What else can be done when only one of the couple cares enough to try? His heart isn't in this and its time for mine to check out. I have to let go and say goodbye. Its a very painful thing to want someone who doesn't want you back but my happiness is worth it. Goodbye.