Hey OCU - are you aware that the Catholic Church also has a definition of marriage? Just one.
Marriage: A "covenant by which a man and a woman establish between themselves a partnership of the whole of life and which is ordered by its nature to the good of the spouses and the procreation and education of offspring. [It] has been raised by Christ the Lord to the dignity of a sacrament between the baptised."
I just thought you'd be interested in knowing what it is that you're supposed to (but do not) believe.

Gold is $1,581/oz today. When it hits $2,000, it will be up 26.5%. Let's see how long that takes. - De 3/11/2013 - ANSWER: 7 Years, 5 Months