Should i break up with jullian?

I have never loved someone like jullian. I don’t want to be without him. But i ask so much of him and he can’t do anything i ask. He chooses smoking over me and my needs and happiness. It’s like he doesn’t care. He wants to get married and he dreams more about starting a family than i do. He loves me so much and i feel the same but he makes me so unhappy. I’ve lost so many friends because of him and he just hurts me all of the time. I cant picture being without him. What do i do? (This is the first time i’ve ever been loyal to someone and if i move on i don’t think i’ll be able to do it again).