There is a young boy in our neighborhood. During college, he found a girlfriend, and the girl became pregnant.

The boy's mother said she was from the countryside and absolutely refused to let her son marry her.
The marriage didn't happen, and the child was aborted.
The boy couldn't handle the shock and completely went crazy.
His parents took him to many hospitals, spent a lot of money, but couldn't cure him.
Not long after returning home, he relapsed.
Now the boy is over forty years old, and he passes by the park every day, cursing people with foul language.
Sometimes he even follows young women, frightening people into quickening their pace to leave.
His parents are teachers and only have this one son.
Now they don't know if his mother regrets it or not.