In the time of the Roman Empire (17 B.C.- A.D. 476) the lower classes who became Christians later had common law or free marriages. The father would deliver the bride and the agreement of the two was called a consensus to wed. Then eventually as Christianity spread the church interpreted a "free" marriage as a conscience marriage. This agreement meant that each partner was to keep the marriage vows and the marriage intact.
There were Romans who were very wealthy who would sign documents consisting of listing property rights and letting all know that they wanted this union to be legalized and not to be thought of as a common law marriage. Thus this began the official recording of marriages as we do today. Roman men could dissolve the marriage any time as it was a male privilege, not one accorded to females.
In A.D. 527-565 during the rein of Justinian lawyers drew up laws called the Justinian Code and this was a regulation of their daily life including marriage. Up until the time of the Justinian Code just saying you were married was enough.
Until the ninth century marriages were not church involved. Up until the twelfth century there were blessings and prayers during the ceremony and the couple would offer their own prayers. Then priests asked that an agreement be made in their presence. Then religion was added to the ceremony.
Emphasis added.
I think we're not going to change each other's minds, so I'll let you have the last word.
Cheers,
Scott.