A benefactor is one party involved a mutually beneficial relationship between two shallow people.
Usually, this type of relationship involves one extremely sexy person (a gold digger) and one extremely rich person (a sugar daddy.)
Hugh Heffner pays for everything his girlfriends' need. In return, they satisfy his Viagra-induced needs. Each one of Hugh Heffner's girlfriends is a benefactor, as is he.
A benefactor is someone who provides help to a person, group, or organization, often in the form of financial support. They are essentially givers who contribute to the well-being of others without expecting anything in return.