For Uncle Lumpy, and whoever else has an interest :)
This is a cut and paste from a Notre Dame site which references the Catechism.
Uncle Lumpy, I stand corrected, to some extent. The phrase was "objectively disordered" not "gravely disordered".
My point is, the orientation itself is labeled and identified as disordered. Not a behavior or an action, but an orientation. To my mind, it's splitting hairs to differentiate between a person's orientation and the person herself or himself.
Anyway, the text follows.
"Homosexuality refers to relations between
men or between women who experience an
exclusive or predominant sexual attraction
toward persons of the same sex. It has taken
a variety of forms through the centuries and
in different cultures. Its psychological genesis
remains unexplained (#2357). The number of
men and women who have deep-seated
homosexual tendencies is not negligible. This
inclination, which is objectively disordered,
constitutes for most of them a trial. They must
be accepted with respect, compassion, and
sensitivity. Every sign of unjust discrimination
in their regard should be avoided (#2358).
This orientation of one's sexual attraction is judged "objectively disordered" because it
inclines people in ways contrary to the masculine/feminine complementarity which the Catholic tradition takes to be normative, and which society normally presumes, so the Catechism suggests that it "constitutes for most of them a trial." Yet the inclination itself cannot be sinful, even though objectively it may be said to be disordered, since it is "deep-seated" rather than freely chosen, with its sources "unexplained," so its being "objectively" part of us can hardly be our responsibility. Moreover, those who have come to accept this inclination as part of themselves may no longer consider it "a trial." So what the Catechism goes on to say about homosexual persons can be said of all human beings, each in their own way: "These persons are called to fulfill God's will in their lives and, if they are Christians, to unite to the sacrifice of the Lord's Cross the difficulties they may encounter from their condition" (#2358)."