Someone else is bound to tell you, but try the CATECHISM OF THE CATHOLIC CHURCH, 796 and 808. Might do it for you, might not.
Thanks for the references on the marriage of Jesus and the Church.
I note that 796 refers to this idea as an image and a theme.
I note that 808 simply states, "The Church is the Bride of Christ: he loved her and handed himself over for her. He has purified her by his blood and made her the fruitful mother of all God's children."
I see support for both the position that there is a literal marriage, and the position that the relation is similar to a marriage.