You know what I meant, Leon.
You can sugarcoat it however you want, but unless you actually said to yourself, "I only need a girlfriend for X number of weeks/months/years, then I can dump her because she'll no longer be useful to me," then you are no more special than the rest of us who have experienced failed relationships.
So what you're saying is people can never change their minds halfway through a relationship? What if I'm deeply in love with someone for a few years then suddenly I have a resounding "meh" feeling towards them. Did it fail then? No, we just grew apart. I'm starting to think you don't want any kind of relationship at all, because you seem deadset on making no effort to finding one.