I need some help guys and women?

im gona have a baby with someone who is never happy someone who makes me feel like he doesnt even care we were supposed to get a place together and he said he wants to sleep in seperate rooms but he used to say he wanted to be with me forever that i was the one he wanted to marry we do nothing but fight and its on the brink of being over i dont want it to how do i make him see how much he really hurts me