As a general rule of thumb, rich men and women tend to stay away from conventional dating sites that are open to all, such as Tinder, OkCupid, and the like. Instead, they prefer using exclusive sites that limit the number of users by setting higher fees or asking for proof of identity or even net worth. Some of the most popular websites that millionaires use include Sugar Daddy Meet, Millionaire Match, Millionaire Mate, and Seeking.