Wrong. The Fall of Adam and Eve was a sin of disobedience, identified with pride (the desire to be "like the gods"). It was a spiritual sin, not a carnal one. Only after the original sin did our sexual desires become disordered. Nevertheless, the sexual union of marriage is still called "the one blessing not forfeited by original sin or washed away in the flood" (Catholic Marriage Rite).
Adam, Eve and Evolution
Original Sin in Scripture & Tradition with response to objections (Catholic Encyclopedia)
Catholic Teaching on Marriage
Back to the Original Sin of Sex