I suppose the reason I care whether or not he likes me is because he is my husband, the father of my children, and used to be my friend.
I care too - not that he likes me, but enough that I will not watch himself abuse himself with drugs and alcohol. I care enough to tell the truth and follow through with logical consequences. I care enough to do the right thing even if he doesn't like it. I care enough not to support his drug and alcohol addiction or any part of that lifestyle. Actually, I don't just care. I love. I want to see him get better. I know that not enforcing boundaries only makes him sicker. I care enough to do something that is very difficult - draw boundaries and enforce them. And I am the only person in his life who has ever cared that much. He just uses everyone else. Me. He respects now.
(Not enough to stay clean of course, but enough not to violate my boundaries.)