What does the prospective son-in-law mean?

A man who is going to be a son-in-law.

Himalayan inquiry learned that the prospective son-in-law means the person who will become a son-in-law, but it has been recognized by the woman's family. Prospective son-in-law can also be called son-in-law and east bed. In the past, there were other names such as husband and attached horse.

A son-in-law usually refers to her daughter's husband, that is, the person her daughter marries after marriage.