I think it's about a mutual breakup. For whatever reason the relationship has reached it's end but they still communicate. This communication kills him and the only way it will get better is if they don't talk. "It's just that it won't get better 'til you leave me alone".
Also the line, "We can't stand each other but we can't be apart", clearly indicates they want to be away from each other but can't do it because of how attached they are.
I think it's about a mutual breakup. For whatever reason the relationship has reached it's end but they still communicate. This communication kills him and the only way it will get better is if they don't talk. "It's just that it won't get better 'til you leave me alone".
Also the line, "We can't stand each other but we can't be apart", clearly indicates they want to be away from each other but can't do it because of how attached they are.