If it's not worth breaking up over then it's not worth arguing over. If you're arguing every other day, you're not in a relationship, you're on a debate team. Not every concern needs to be an issue. Let the insignificant things stay that way. -Tony Gaskins Jr-
"I don't know why we all hang on to something we know we're better off letting go of. It's like we're scared to lose what we don't even really have. Some of us say we'd rather have something than absolutely nothing, but the truth is, to have it halfway is harder than not having it at all." -Meredith Grey-
At some point you will realize that you have done too much for someone, that the only next possible step to do is to stop. Leave them alone. Walk away. It's not like your giving up and it's not like you shouldn't try. It's just that you have to draw the line of determination from desperation. What truly yours will eventually be yours and what is not, no matter how hard you try, will never be.