Amish dating customs help the Amish Church grow by promoting marrige within the church. Find out how Amish couples meet and court. The Best Dating Sites for Finding a Serious Relationship. By Dating website eHarmony boasts ", married couples who met on eHarmony," and writes on their. Duration. The average duration of courtship varies considerably throughout the world. Furthermore, there is vast individual variation between couples. eharmony - A Trusted Online Dating Site for Singles. eharmony is the first service within the online dating industry to use a scientific approach to matching highly compatible singles. eharmony's matching is based on using its 29 DIMENSIONS® model to match couples based on features of compatibility found in thousands of successful .