Congratulations; I am so happy for you!
When it comes to weddings and married couples, I can think of a few; Frank and Helen in
The Magician's Nephew, Shasta/Cor and Aravis in a few comments at the very end of
The Horse and His Boy, lightly touching King Caspian and the star's daughter beginning to fall in love in chapters 13, 14, and in the last paragraph of
Voyage of the Dawn Treader. This isn't even starting on the examples of what you
don't want in a marriage (Prince Rilian and the Green Lady, Susen and Rabadash, Aravis and Ahoshta Tarkaan, Caspian and the Duke of Galma's daughter . . .
)
Seriously though, as a children's book and a fairy tale, it doesn't make a fuss about marriage, though it clearly makes it a beautiful, albeit practical thing. If you can't find any particular part you are happy with, you could always forget specifics, and focus on generalities (Aslan as the bridegroom, and everything he does and goes through for his people; the nature of love in the books (how it leads characters to act or feel at times); the beauty and gentility of the women, the strength and courage of the men), and find a quote that brings that particular beautiful thing out (or reflects your relationship).
Hope this general ramble helped, and God bless.
Silence