What does fortune telling mean that marriage is hard to come back after lovelorn?

Fortune-telling says that marriage and lovelorn love are hard to get back, which means that if you get married, your former lover will be irretrievable. For thousands of years, fortune telling has been a skill and a means of making a living. It is no different from shaving, pedicure, cross talk, allegro singing, juggling and so on. Fortune telling is a means of making a living. Fortune tellers have to find ways to make profits, and cheating is inevitable.