The girl he misses may be Athena Chu, and the answer can be found in the movie The Journey to the West. He had long wanted to leave Hong Kong for Canada, but unfortunately he didn't. Later, he decided not to return to the screen and retired behind the scenes.
And Stephen Chow's first love also gave Stephen Chow a big blow. Stephen Chow's first love was Luo Huijuan, 1989, and they became attached to drama. At that time, Xingye's career had not been successful. After a chance encounter, the two fell in love with each other. But later, due to the opposition of Xingye's family, they did not come together.
She is a person who knows Stephen Chow very well. She once said, Stephen Chow is an extremely painful person, who will only work forever. But then Luo Huijuan got pancreatic cancer and finally left this world and Stephen Chow. Stephen Chow is a very emotional person, and this matter has a great influence on him.
To sum up, I think this is the reason why Stephen Chow never got married.