Providing a basic plan for understanding this entire discussion of homosexuality is the theology of creation we find in Genesis. God, in his infinite wisdom and love, brings into existence all of reality as a reflection of his goodness. He fashions mankind, male and female, in his own image and likeness. They do this in a striking way in their cooperation with him in the transmission of life by a mutual donation of the self to the other. This is the key to understanding how ludicrous it is to elevate one individual's death above another's.
Scripture is very clear on the teaching against homosexuality.
Saint Paul is distinguishing the importance of supernatural death over natural death, the former having eternal consequences as opposed to the latter. Instead of the original harmony between Creator and creatures, the acute distortion of idolatry has led to all kinds of moral excess. Paul is at a loss to find a clearer example of this disharmony than homosexual relations. The Church, obedient to the Lord who founded her and gave to her the sacramental life, celebrates the divine plan of the loving and live-giving union of men and women in the sacrament of marriage. It is only in the marital relationship that the use of the sexual faculty can be morally good.