Sex outside of marriage is disordered. There is a solution for that, get married. However being attracted to a member of the opposite sex is not disordered (assuming it is appropriate and legal) while being attracted to a member of the same sex is.
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While all sin is disordered, homosexual activity is INTRINSICALLY disordered, because while heterosexual activity is disordered outside of marriage, homosexual activity is disordered by its very nature.
(I still think it is a mistake leading to confusion to lump them together.)