If there is one thing that is indisputable about humans, it’s that humans are inherently selfish creatures without exception. Arguably, you can say that all animals are inherently selfish. There is nothing more important than the self. From an evolutionary standpoint, selfish creatures will tend to live longer than that of selfless creatures. Due to this, they have a higher chance of reproducing and passing on their genes.
Humans are one of the few species capable of displaying altruism. However, despite this, self preservation is the most important thing in almost all humans. With how shallow society is, a man running away from danger and leaving his significant other is not surprising.