Persona humana[edit]
In 1975, the Sacred Congregation for the Doctrine of the Faith issued the document Persona humana dealing with sexual ethics. It stated that those who "have begun to judge indulgently, and even to excuse completely, homosexual relations between certain people" do so "in opposition to the constant teaching of the Magisterium and to the moral sense of the Christian people". It noted that "a distinction is drawn, and it seems with some reason, between homosexuals whose tendency comes from a false education, from a lack of normal sexual development, from habit, from bad example, or from other similar causes, and is transitory or at least not incurable; and homosexuals who are definitively such because of some kind of innate instinct or a pathological constitution judged to be incurable".
It criticised those who held that for the latter class of homosexuals the tendency "justifies in their case homosexual relations within a sincere communion of life and love analogous to marriage". It stated that in Scripture homosexual acts "are condemned as a serious depravity and even presented as the sad consequence of rejecting God", a condemnation that "attest[s] to the fact that homosexual acts are intrinsically disordered and can in no case be approved of".[27]
http://en.wikipedia.org/wiki/Homosexuality_and_Roman_Catholicism