The invention of "gay marriage" is not a sin in the same level as even the worst sins of lust. In a sense, it goes beyond them, by denying that our corporeal being, our being of flesh, has anything to do with our essential self. We can be "married" to anything that thinks, because only the non-corporeal mind is really married - anything else is mindless flesh, to be indulged or neglected as the case may be, but at any rate having nothing to do with our essential selves. This is a direct denial of the Catholic doctrine of mankind, of which the sacrament of marriage is only a part; it denies just as thoroughly, for instance, the sacrament of Anointing the Sick, since it denies the hope offered to the dying of being reborn in the flesh. Thus, while homosexual lust as such is a lust like any other (as I argued a few weeks ago), nonetheless the invention of "homosexual marriage" has made the matter of cohabitation and "gay couples" with their own adopted children something that goes well beyond even the promotion of lust for its own sake.