Instead of defining marriage by religious terms since it isn't why doesn't the secondary Abraham based religion get their own term. Did you miss the part about news getting married long before Jesus around so therefore we should let the Jews or whoever they potentially picked the marriage concept up define what marriage is? It's an inconvenient truth for the uneducated historically. The Jews also believed originally not one man and woman as so many claimed was the original intent but potentially one man and 10 women and I think if that man died his brother got his wives. Thank goodness Mike has no brother.
Also Adam and Eve weren't married but she was his baby mama.