All animals, male and female, including human, look for mates with the highest status/fitness. It is the Darwinian imperative to ensure survival of the offspring. So when you are dumped, unless your bad behaviour is obvious, it is not as though you were left, but rather that your mate found someone more attractive whom they believed they had a chance of landing. There is no great shame in this. It is utterly unrealistic to expect that you would be the highest status person on the planet whom your mate figures he or she would have a chance with. Some people imagine they would even have a chance with Billboards #1 Black Female Recording Artist or "eRoyality_Janet Jackson'