What is the psychology of boys who often take selfies and look in the mirror?

As the saying goes, "everyone loves beauty." A boy often takes selfies and looks in the mirror, which shows that he has a certain pursuit of his appearance and external image. He pursues beauty, but at the same time it makes people feel uncomfortable. After all, he is a boy, which makes him look like a tough guy and easily gives people a feeling of narcissism and unconfidence.