Same Sex Marriages

I had kind of forgotten that a few years ago when I acquired a fascinating work by author David Lang that one of the items that he addressed in the book was same-sex marriages. The book is entitled "Why Matter Matters" and is about the "matter" of the sacraments...why wheat bread and grape wine should be used for the Eucharist, why olive oil should be used in annointings, why a male is the appropriate "matter" for the priesthood and why a male and a female are the right matter for marriage. If you are looking for something on this subject, I highly recommend David's book that includes a preface by Peter Kreeft.