The recent conversations about the morality and ethics of breakups have been fascinating to me. Personally, I've never considered breaking up to be a question of morality but of practicality. Dating is an audition for lifelong commitment, and breaking up is what you do when you realize you don't want to be with that person for the rest of your life. Simple as that. Morality doesn't factor into it.

But it's become evident that not everyone sees it this way, so I'm trying to figure out where exactly the distinction is for people who think of breakups as an ethical question. Where is the line between an ethical and unethical breakup? Does it matter how long you've been with the person? Do their life circumstances affect the morality of your decision to break up with them? Is it different before and after "I love yous" are said or you move in together?

*Tl;dr: I'm curious at what point a relationship becomes a serious commitment that's morally questionable if not outright immoral to break.**