Katie,
I think absolutely we can say Adam and Eve were married. In a wedding, we publicly give vows. There was no public in the garden, so a communal gathering is irrelevant. As for a priest -- they walked in open fellowship with God, who created them and their union. What more of a priest could we ask for?

Regarding morality vs. immorality, I follow Ryan's expressions. Morality is defined in the authority of the bible as the word of God. His word is whole, leading to freedom, not pain. I've proven to be a deficient judge of what's good for me. God as Creator is constant and gracious, giving perception and health through His word. It's the only word to stand on.

The wedding for me isn't about ceremonial blessing. That appropriately sounds artificial. Thinking past the context of historical wrongdoings, the wedding ceremony is about Husband and Wife declaring to each other in the presence of all who care to hear that We're In This; we're committed to one another; we will not let go. It's about the community supporting their union, collectively going to God for the blessing of the marriage and the individuals. That promise, that covenant relationship, gives me security to be vulnerable. It's a big part of what kept us together when we, in the young-20s youth of our marriage, were navigating rough waters. I don't understand how being with a person, no matter how sincere, is healthy when it's premature of his public declaration to serve, value, and uphold me. Isn't that wholesome, noble, and worth waiting for? (--Though certainly not to be rushed into, as it sounds the article may have been suggesting.) That said, I know full well that marriages fail. Spouses are broken, sometimes coercive, and a one-time promise on a wedding day doesn't amount to a hill of beans when your spouse becomes manipulative and control-seeking.