May I also offer this? As Christians, it's settled doctrine that we are "freed" from God's Laws. We do not keep kosher, avoid fabric with multiple kinds of fiber, etc.
Well, the passages usually cited against homosexuality are in Leviticus, right near the ones about keeping kosher, etc. So a Christian who does not keep kosher should apply the same logic about homosexuality; i.e., it's against God's Law, but we are no longer required to obey those Laws.
Of course, that doesn't apply to Jews or Muslims.