My mother used my son's birthday as a fortune teller, saying that my son was born as a monk and may not get married when he grows up.

Damn it, why are you so superstitious? I hate telling children's fortune. What kind of life he chooses is his own business, and others have no right to interfere. No one knows what he will develop into in the future. Don't always tell children's fortune. Once you have this kind of worry in your heart, what was impossible is likely to really develop like this. Take care of your mother,