A romantic novel that requires a man to be poor first and then rich.

"The boss is Uber" basically meets your requirements. The woman's family used to be very rich, and the man used to be the child of the driver of the woman's family, which can be regarded as childhood friends, but the woman and the former man were unhappy ... because the man used to be a little fat man, then the woman's family decreased, and I forgot how to reduce it, but it probably had something to do with the man's father, because the man later became rich and was a hotel owner, and.