Comment: As a Catholic, there is and

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In reply to comment: As a Catholic, there is and (see in situ)

As a Catholic, there is and

As a Catholic, there is and always will be only one definition of marriage.

That is until the politics in Rome change so much that they redefine it, or( since you didn't say what kind of Catholic you are) a different type of Catholic church say ok to gay marriage. I bet we see the Anglican Catholics in the USA eventually being ok with it; they (the Episcopal Church) already okay'd Same Sex Blessings.

Definitions change all the time. The Liberal of the 19th century is very different from the Liberal of today. Perhaps the Marriage of today will be different from the marriage of tomorrow.